diff --git a/.gitignore b/.gitignore
index eb5a316cb..1de565933 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1 @@
-target
+target
\ No newline at end of file
diff --git a/ci/build_release.sh b/ci/build_release.sh
index 3e9bfdcb0..858248d93 100755
--- a/ci/build_release.sh
+++ b/ci/build_release.sh
@@ -3,6 +3,16 @@
 set -eux
 
 cargo install --path . --force
+
+if [[ "${TARGET}" = "x86_64-unknown-linux-gnu" ]]; then
+    # for this particular target, `cross` command below will try to reuse the artifacts (e.g. build
+    # script binaries) generated by the previous `cargo` command. that will fail to run because the
+    # cross environment has glibc 2.17 and the CI env (ubuntu 20.04) produces binaries that depend
+    # on glibc 2.18+
+    # to avoid the issue discard the build script artifacts produced by the previous command
+    cargo clean
+fi
+
 cross build --target "${TARGET}" --release
 
 rm -rf "${BUILD_BINARIESDIRECTORY}"
diff --git a/docker/Dockerfile.aarch64-linux-android b/docker/Dockerfile.aarch64-linux-android
index 2d5765ce1..935716025 100644
--- a/docker/Dockerfile.aarch64-linux-android
+++ b/docker/Dockerfile.aarch64-linux-android
@@ -1,6 +1,6 @@
 FROM ubuntu:20.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.aarch64-unknown-linux-gnu b/docker/Dockerfile.aarch64-unknown-linux-gnu
index 27c1f170d..675d4bcd8 100644
--- a/docker/Dockerfile.aarch64-unknown-linux-gnu
+++ b/docker/Dockerfile.aarch64-unknown-linux-gnu
@@ -1,6 +1,6 @@
 FROM ubuntu:16.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.aarch64-unknown-linux-musl b/docker/Dockerfile.aarch64-unknown-linux-musl
index 255471268..19c0023fd 100644
--- a/docker/Dockerfile.aarch64-unknown-linux-musl
+++ b/docker/Dockerfile.aarch64-unknown-linux-musl
@@ -1,6 +1,6 @@
 FROM ubuntu:18.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.arm-linux-androideabi b/docker/Dockerfile.arm-linux-androideabi
index 7220d560d..bc8ed9032 100644
--- a/docker/Dockerfile.arm-linux-androideabi
+++ b/docker/Dockerfile.arm-linux-androideabi
@@ -1,6 +1,6 @@
 FROM ubuntu:20.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.arm-unknown-linux-gnueabi b/docker/Dockerfile.arm-unknown-linux-gnueabi
index c57bf6fc1..95a794471 100644
--- a/docker/Dockerfile.arm-unknown-linux-gnueabi
+++ b/docker/Dockerfile.arm-unknown-linux-gnueabi
@@ -1,6 +1,6 @@
 FROM ubuntu:16.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.arm-unknown-linux-gnueabihf b/docker/Dockerfile.arm-unknown-linux-gnueabihf
index 6aa7f2aeb..0edd07e56 100644
--- a/docker/Dockerfile.arm-unknown-linux-gnueabihf
+++ b/docker/Dockerfile.arm-unknown-linux-gnueabihf
@@ -1,6 +1,6 @@
 FROM ubuntu:18.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.arm-unknown-linux-musleabi b/docker/Dockerfile.arm-unknown-linux-musleabi
index ada77066a..ce0fda9b5 100644
--- a/docker/Dockerfile.arm-unknown-linux-musleabi
+++ b/docker/Dockerfile.arm-unknown-linux-musleabi
@@ -1,6 +1,6 @@
 FROM ubuntu:18.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.arm-unknown-linux-musleabihf b/docker/Dockerfile.arm-unknown-linux-musleabihf
index 32ac20a60..bf7ed657e 100644
--- a/docker/Dockerfile.arm-unknown-linux-musleabihf
+++ b/docker/Dockerfile.arm-unknown-linux-musleabihf
@@ -1,6 +1,6 @@
 FROM ubuntu:18.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.armv5te-unknown-linux-gnueabi b/docker/Dockerfile.armv5te-unknown-linux-gnueabi
index db629e17e..c7f08cf83 100644
--- a/docker/Dockerfile.armv5te-unknown-linux-gnueabi
+++ b/docker/Dockerfile.armv5te-unknown-linux-gnueabi
@@ -1,6 +1,6 @@
 FROM ubuntu:18.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.armv5te-unknown-linux-musleabi b/docker/Dockerfile.armv5te-unknown-linux-musleabi
index e63546610..4de543e23 100644
--- a/docker/Dockerfile.armv5te-unknown-linux-musleabi
+++ b/docker/Dockerfile.armv5te-unknown-linux-musleabi
@@ -1,6 +1,6 @@
 FROM ubuntu:18.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.armv7-linux-androideabi b/docker/Dockerfile.armv7-linux-androideabi
index 7215344a1..79a900da4 100644
--- a/docker/Dockerfile.armv7-linux-androideabi
+++ b/docker/Dockerfile.armv7-linux-androideabi
@@ -1,6 +1,6 @@
 FROM ubuntu:20.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.armv7-unknown-linux-gnueabihf b/docker/Dockerfile.armv7-unknown-linux-gnueabihf
index e641a552d..ba2c1842b 100644
--- a/docker/Dockerfile.armv7-unknown-linux-gnueabihf
+++ b/docker/Dockerfile.armv7-unknown-linux-gnueabihf
@@ -1,6 +1,6 @@
 FROM ubuntu:16.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.armv7-unknown-linux-musleabihf b/docker/Dockerfile.armv7-unknown-linux-musleabihf
index 137860e54..155496156 100644
--- a/docker/Dockerfile.armv7-unknown-linux-musleabihf
+++ b/docker/Dockerfile.armv7-unknown-linux-musleabihf
@@ -1,6 +1,6 @@
 FROM ubuntu:20.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.asmjs-unknown-emscripten b/docker/Dockerfile.asmjs-unknown-emscripten
index 7a93aa3b7..179954a3f 100644
--- a/docker/Dockerfile.asmjs-unknown-emscripten
+++ b/docker/Dockerfile.asmjs-unknown-emscripten
@@ -1,6 +1,6 @@
 FROM ubuntu:16.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.i586-unknown-linux-gnu b/docker/Dockerfile.i586-unknown-linux-gnu
index 6a00d83e2..b91ac04f8 100644
--- a/docker/Dockerfile.i586-unknown-linux-gnu
+++ b/docker/Dockerfile.i586-unknown-linux-gnu
@@ -1,6 +1,6 @@
 FROM ubuntu:16.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.i586-unknown-linux-musl b/docker/Dockerfile.i586-unknown-linux-musl
index 204ba3782..6950f3ef3 100644
--- a/docker/Dockerfile.i586-unknown-linux-musl
+++ b/docker/Dockerfile.i586-unknown-linux-musl
@@ -1,6 +1,6 @@
 FROM ubuntu:18.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.i686-linux-android b/docker/Dockerfile.i686-linux-android
index a9fdb85d7..be8f68e6c 100644
--- a/docker/Dockerfile.i686-linux-android
+++ b/docker/Dockerfile.i686-linux-android
@@ -1,6 +1,6 @@
 FROM ubuntu:20.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.i686-pc-windows-gnu b/docker/Dockerfile.i686-pc-windows-gnu
index 39d49613c..4a0dd3c8f 100644
--- a/docker/Dockerfile.i686-pc-windows-gnu
+++ b/docker/Dockerfile.i686-pc-windows-gnu
@@ -1,6 +1,6 @@
 FROM ubuntu:18.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.i686-unknown-freebsd b/docker/Dockerfile.i686-unknown-freebsd
index 43abb86b0..382714ec8 100644
--- a/docker/Dockerfile.i686-unknown-freebsd
+++ b/docker/Dockerfile.i686-unknown-freebsd
@@ -1,6 +1,6 @@
 FROM ubuntu:16.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY xargo.sh /
diff --git a/docker/Dockerfile.i686-unknown-linux-gnu b/docker/Dockerfile.i686-unknown-linux-gnu
index f76911341..1a7b98f0c 100644
--- a/docker/Dockerfile.i686-unknown-linux-gnu
+++ b/docker/Dockerfile.i686-unknown-linux-gnu
@@ -1,6 +1,6 @@
 FROM ubuntu:16.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.i686-unknown-linux-musl b/docker/Dockerfile.i686-unknown-linux-musl
index d0d2c57e6..5d771bb49 100644
--- a/docker/Dockerfile.i686-unknown-linux-musl
+++ b/docker/Dockerfile.i686-unknown-linux-musl
@@ -1,6 +1,6 @@
 FROM ubuntu:18.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.mips-unknown-linux-gnu b/docker/Dockerfile.mips-unknown-linux-gnu
index 04ae0b024..990642101 100644
--- a/docker/Dockerfile.mips-unknown-linux-gnu
+++ b/docker/Dockerfile.mips-unknown-linux-gnu
@@ -1,6 +1,6 @@
 FROM ubuntu:16.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.mips-unknown-linux-musl b/docker/Dockerfile.mips-unknown-linux-musl
index bc23ce1ce..4d04fadcd 100644
--- a/docker/Dockerfile.mips-unknown-linux-musl
+++ b/docker/Dockerfile.mips-unknown-linux-musl
@@ -1,6 +1,6 @@
 FROM ubuntu:18.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.mips64-unknown-linux-gnuabi64 b/docker/Dockerfile.mips64-unknown-linux-gnuabi64
index d595b4e6b..e51089d73 100644
--- a/docker/Dockerfile.mips64-unknown-linux-gnuabi64
+++ b/docker/Dockerfile.mips64-unknown-linux-gnuabi64
@@ -1,6 +1,6 @@
 FROM ubuntu:16.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.mips64el-unknown-linux-gnuabi64 b/docker/Dockerfile.mips64el-unknown-linux-gnuabi64
index f6e60e67d..720ca2947 100644
--- a/docker/Dockerfile.mips64el-unknown-linux-gnuabi64
+++ b/docker/Dockerfile.mips64el-unknown-linux-gnuabi64
@@ -1,6 +1,6 @@
 FROM ubuntu:16.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.mipsel-unknown-linux-gnu b/docker/Dockerfile.mipsel-unknown-linux-gnu
index e3efef738..c846da675 100644
--- a/docker/Dockerfile.mipsel-unknown-linux-gnu
+++ b/docker/Dockerfile.mipsel-unknown-linux-gnu
@@ -1,6 +1,6 @@
 FROM ubuntu:16.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.mipsel-unknown-linux-musl b/docker/Dockerfile.mipsel-unknown-linux-musl
index b0cabb17c..01f406809 100644
--- a/docker/Dockerfile.mipsel-unknown-linux-musl
+++ b/docker/Dockerfile.mipsel-unknown-linux-musl
@@ -1,6 +1,6 @@
 FROM ubuntu:18.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.powerpc-unknown-linux-gnu b/docker/Dockerfile.powerpc-unknown-linux-gnu
index 984d0119f..b56c45f78 100644
--- a/docker/Dockerfile.powerpc-unknown-linux-gnu
+++ b/docker/Dockerfile.powerpc-unknown-linux-gnu
@@ -1,6 +1,6 @@
 FROM ubuntu:16.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.powerpc64-unknown-linux-gnu b/docker/Dockerfile.powerpc64-unknown-linux-gnu
index f6c9da519..70c845cb0 100644
--- a/docker/Dockerfile.powerpc64-unknown-linux-gnu
+++ b/docker/Dockerfile.powerpc64-unknown-linux-gnu
@@ -1,6 +1,6 @@
 FROM ubuntu:16.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.powerpc64le-unknown-linux-gnu b/docker/Dockerfile.powerpc64le-unknown-linux-gnu
index 50e73063b..e6aa1634c 100644
--- a/docker/Dockerfile.powerpc64le-unknown-linux-gnu
+++ b/docker/Dockerfile.powerpc64le-unknown-linux-gnu
@@ -1,6 +1,6 @@
 FROM ubuntu:16.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.riscv64gc-unknown-linux-gnu b/docker/Dockerfile.riscv64gc-unknown-linux-gnu
index 3d62c55ca..766ee9d0c 100644
--- a/docker/Dockerfile.riscv64gc-unknown-linux-gnu
+++ b/docker/Dockerfile.riscv64gc-unknown-linux-gnu
@@ -1,6 +1,6 @@
 FROM ubuntu:18.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 # COPY cmake.sh /
diff --git a/docker/Dockerfile.s390x-unknown-linux-gnu b/docker/Dockerfile.s390x-unknown-linux-gnu
index 0afeeca10..c12be7390 100644
--- a/docker/Dockerfile.s390x-unknown-linux-gnu
+++ b/docker/Dockerfile.s390x-unknown-linux-gnu
@@ -1,6 +1,6 @@
 FROM ubuntu:16.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.sparc64-unknown-linux-gnu b/docker/Dockerfile.sparc64-unknown-linux-gnu
index 33fe9a755..254e061de 100644
--- a/docker/Dockerfile.sparc64-unknown-linux-gnu
+++ b/docker/Dockerfile.sparc64-unknown-linux-gnu
@@ -1,6 +1,6 @@
 FROM ubuntu:16.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.sparcv9-sun-solaris b/docker/Dockerfile.sparcv9-sun-solaris
index 3ff9a3863..59302ecde 100644
--- a/docker/Dockerfile.sparcv9-sun-solaris
+++ b/docker/Dockerfile.sparcv9-sun-solaris
@@ -1,6 +1,6 @@
 FROM ubuntu:16.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.thumbv6m-none-eabi b/docker/Dockerfile.thumbv6m-none-eabi
index dd7b0b91b..00af0c616 100644
--- a/docker/Dockerfile.thumbv6m-none-eabi
+++ b/docker/Dockerfile.thumbv6m-none-eabi
@@ -1,6 +1,6 @@
 FROM ubuntu:16.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.thumbv7em-none-eabi b/docker/Dockerfile.thumbv7em-none-eabi
index d98b17d17..cea97bb17 100644
--- a/docker/Dockerfile.thumbv7em-none-eabi
+++ b/docker/Dockerfile.thumbv7em-none-eabi
@@ -1,6 +1,6 @@
 FROM ubuntu:16.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.thumbv7em-none-eabihf b/docker/Dockerfile.thumbv7em-none-eabihf
index 495eb1974..f95d94deb 100644
--- a/docker/Dockerfile.thumbv7em-none-eabihf
+++ b/docker/Dockerfile.thumbv7em-none-eabihf
@@ -1,6 +1,6 @@
 FROM ubuntu:16.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.thumbv7m-none-eabi b/docker/Dockerfile.thumbv7m-none-eabi
index a9a1d43fa..24fdb7552 100644
--- a/docker/Dockerfile.thumbv7m-none-eabi
+++ b/docker/Dockerfile.thumbv7m-none-eabi
@@ -1,6 +1,6 @@
 FROM ubuntu:16.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.wasm32-unknown-emscripten b/docker/Dockerfile.wasm32-unknown-emscripten
index 59425eae5..7b0340faf 100644
--- a/docker/Dockerfile.wasm32-unknown-emscripten
+++ b/docker/Dockerfile.wasm32-unknown-emscripten
@@ -1,6 +1,6 @@
 FROM ubuntu:16.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.x86_64-linux-android b/docker/Dockerfile.x86_64-linux-android
index ba4c4f1bc..b46e7a27a 100644
--- a/docker/Dockerfile.x86_64-linux-android
+++ b/docker/Dockerfile.x86_64-linux-android
@@ -1,6 +1,6 @@
 FROM ubuntu:20.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.x86_64-pc-windows-gnu b/docker/Dockerfile.x86_64-pc-windows-gnu
index 18d8c0c6e..e2095b4d4 100644
--- a/docker/Dockerfile.x86_64-pc-windows-gnu
+++ b/docker/Dockerfile.x86_64-pc-windows-gnu
@@ -1,6 +1,6 @@
 FROM ubuntu:18.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.x86_64-sun-solaris b/docker/Dockerfile.x86_64-sun-solaris
index b8b240b18..6ee020630 100644
--- a/docker/Dockerfile.x86_64-sun-solaris
+++ b/docker/Dockerfile.x86_64-sun-solaris
@@ -1,6 +1,6 @@
 FROM ubuntu:16.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.x86_64-unknown-freebsd b/docker/Dockerfile.x86_64-unknown-freebsd
index 0679a7f07..63b1140a8 100644
--- a/docker/Dockerfile.x86_64-unknown-freebsd
+++ b/docker/Dockerfile.x86_64-unknown-freebsd
@@ -1,6 +1,6 @@
 FROM ubuntu:16.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY xargo.sh /
diff --git a/docker/Dockerfile.x86_64-unknown-linux-gnu b/docker/Dockerfile.x86_64-unknown-linux-gnu
index 5faa687e2..7fefa0198 100644
--- a/docker/Dockerfile.x86_64-unknown-linux-gnu
+++ b/docker/Dockerfile.x86_64-unknown-linux-gnu
@@ -1,6 +1,11 @@
 FROM ubuntu:16.04
 
-COPY common.sh /
+COPY linux-image.sh /
+RUN /linux-image.sh x86_64
+
+FROM centos:7
+
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
@@ -15,8 +20,7 @@ RUN /qemu.sh x86_64 softmmu
 COPY dropbear.sh /
 RUN /dropbear.sh
 
-COPY linux-image.sh /
-RUN /linux-image.sh x86_64
+COPY --from=0 /qemu /qemu
 
 COPY linux-runner /
 
diff --git a/docker/Dockerfile.x86_64-unknown-linux-musl b/docker/Dockerfile.x86_64-unknown-linux-musl
index eff3a25f0..80a514051 100644
--- a/docker/Dockerfile.x86_64-unknown-linux-musl
+++ b/docker/Dockerfile.x86_64-unknown-linux-musl
@@ -1,6 +1,6 @@
 FROM ubuntu:20.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/Dockerfile.x86_64-unknown-netbsd b/docker/Dockerfile.x86_64-unknown-netbsd
index 44d3d9cd1..310039ccf 100644
--- a/docker/Dockerfile.x86_64-unknown-netbsd
+++ b/docker/Dockerfile.x86_64-unknown-netbsd
@@ -1,6 +1,6 @@
 FROM ubuntu:16.04
 
-COPY common.sh /
+COPY common.sh lib.sh /
 RUN /common.sh
 
 COPY cmake.sh /
diff --git a/docker/cmake.sh b/docker/cmake.sh
index d16a41e44..d6ee2ca68 100755
--- a/docker/cmake.sh
+++ b/docker/cmake.sh
@@ -3,19 +3,13 @@
 set -x
 set -euo pipefail
 
+# shellcheck disable=SC1091
+. lib.sh
+
 main() {
     local version=3.17.2
 
-    local dependencies=(curl)
-
-    apt-get update
-    local purge_list=()
-    for dep in "${dependencies[@]}"; do
-        if ! dpkg -L "${dep}"; then
-            apt-get install --assume-yes --no-install-recommends "${dep}"
-            purge_list+=( "${dep}" )
-        fi
-    done
+    install_packages curl
 
     local td
     td="$(mktemp -d)"
@@ -27,9 +21,7 @@ main() {
 
     popd
 
-    if (( ${#purge_list[@]} )); then
-      apt-get purge --assume-yes --auto-remove "${purge_list[@]}"
-    fi
+    purge_packages
 
     rm -rf "${td}"
     rm -rf /var/lib/apt/lists/*
diff --git a/docker/common.sh b/docker/common.sh
index 172e90baa..16396a8a9 100755
--- a/docker/common.sh
+++ b/docker/common.sh
@@ -3,26 +3,36 @@
 set -x
 set -euo pipefail
 
+# shellcheck disable=SC1091
+. lib.sh
+
 # For architectures except amd64 and i386, look for packages on ports.ubuntu.com instead.
 # This is important if you enable additional architectures so you can install libraries to cross-compile against.
 # Look for 'dpkg --add-architecture' in the README for more details.
-sed 's/http:\/\/\(.*\).ubuntu.com\/ubuntu\//[arch-=amd64,i386] http:\/\/ports.ubuntu.com\/ubuntu-ports\//g' /etc/apt/sources.list > /etc/apt/sources.list.d/ports.list
-sed -i 's/http:\/\/\(.*\).ubuntu.com\/ubuntu\//[arch=amd64,i386] http:\/\/\1.archive.ubuntu.com\/ubuntu\//g' /etc/apt/sources.list
+if grep -i ubuntu /etc/os-release >/dev/null; then
+    sed 's/http:\/\/\(.*\).ubuntu.com\/ubuntu\//[arch-=amd64,i386] http:\/\/ports.ubuntu.com\/ubuntu-ports\//g' /etc/apt/sources.list > /etc/apt/sources.list.d/ports.list
+    sed -i 's/http:\/\/\(.*\).ubuntu.com\/ubuntu\//[arch=amd64,i386] http:\/\/\1.archive.ubuntu.com\/ubuntu\//g' /etc/apt/sources.list
+fi
+
+install_packages \
+    autoconf \
+    automake \
+    binutils \
+    ca-certificates \
+    curl \
+    file \
+    gcc \
+    git \
+    libtool \
+    m4 \
+    make
 
-apt-get update
+if_centos install_packages \
+    gcc-c++ \
+    glibc-devel \
+    pkgconfig
 
-apt-get install --assume-yes --no-install-recommends \
-  autoconf \
-  automake \
-  binutils \
-  ca-certificates \
-  curl \
-  file \
-  gcc \
-  g++ \
-  git \
-  libc6-dev \
-  libtool \
-  m4 \
-  make \
-  pkg-config
+if_ubuntu install_packages \
+    g++ \
+    libc6-dev \
+    pkg-config
diff --git a/docker/dropbear.sh b/docker/dropbear.sh
index 0c9fffc4d..10392ef73 100755
--- a/docker/dropbear.sh
+++ b/docker/dropbear.sh
@@ -3,26 +3,21 @@
 set -x
 set -euo pipefail
 
+# shellcheck disable=SC1091
+. lib.sh
+
 main() {
     local version=2020.80
 
-    local dependencies=(
-        autoconf
-        automake
-        bzip2
-        curl
+    install_packages \
+        autoconf \
+        automake \
+        bzip2 \
+        curl \
         make
-        zlib1g-dev
-    )
-
-    apt-get update
-    local purge_list=()
-    for dep in "${dependencies[@]}"; do
-        if ! dpkg -L "${dep}"; then
-            apt-get install --assume-yes --no-install-recommends "${dep}"
-            purge_list+=( "${dep}" )
-        fi
-    done
+
+    if_centos install_packages zlib-devel
+    if_ubuntu install_packages zlib1g-dev
 
     local td
     td="$(mktemp -d)"
@@ -50,9 +45,7 @@ main() {
     make "-j$(nproc)" PROGRAMS=dbclient
     cp dbclient /usr/local/bin/
 
-    if (( ${#purge_list[@]} )); then
-      apt-get purge --assume-yes --auto-remove "${purge_list[@]}"
-    fi
+    purge_packages
 
     popd
 
diff --git a/docker/lib.sh b/docker/lib.sh
new file mode 100644
index 000000000..0d299b8a6
--- /dev/null
+++ b/docker/lib.sh
@@ -0,0 +1,45 @@
+purge_list=()
+
+install_packages() {
+    if grep -i ubuntu /etc/os-release; then
+        apt-get update
+
+        for pkg in "${@}"; do
+            if ! dpkg -L "${pkg}" >/dev/null 2>/dev/null; then
+                apt-get install --assume-yes --no-install-recommends "${pkg}"
+
+                purge_list+=( "${pkg}" )
+            fi
+        done
+    else
+        for pkg in "${@}"; do
+            if ! yum list installed "${pkg}" >/dev/null 2>/dev/null; then
+                yum install -y "${pkg}"
+
+                purge_list+=( "${pkg}" )
+            fi
+        done
+    fi
+}
+
+purge_packages() {
+    if (( ${#purge_list[@]} )); then
+        if grep -i ubuntu /etc/os-release; then
+            apt-get purge --assume-yes --auto-remove "${purge_list[@]}"
+        else
+            yum remove -y "${purge_list[@]}"
+        fi
+    fi
+}
+
+if_centos() {
+    if grep -q -i centos /etc/os-release; then
+        eval "${@}"
+    fi
+}
+
+if_ubuntu() {
+    if grep -q -i ubuntu /etc/os-release; then
+        eval "${@}"
+    fi
+}
diff --git a/docker/linux-image.sh b/docker/linux-image.sh
index 7d4a5c80a..1fd03e95c 100755
--- a/docker/linux-image.sh
+++ b/docker/linux-image.sh
@@ -93,6 +93,8 @@ main() {
     esac
 
     local dependencies=(
+        ca-certificates
+        curl
         cpio
         sharutils
         gnupg
@@ -101,7 +103,7 @@ main() {
     local purge_list=()
     apt-get update
     for dep in "${dependencies[@]}"; do
-        if ! dpkg -L "${dep}"; then
+        if ! dpkg -L "${dep}" >/dev/null 2>/dev/null; then
             apt-get install --assume-yes --no-install-recommends "${dep}"
             purge_list+=( "${dep}" )
         fi
diff --git a/docker/qemu.sh b/docker/qemu.sh
index 747fcaa55..94c0a6ab3 100755
--- a/docker/qemu.sh
+++ b/docker/qemu.sh
@@ -3,6 +3,69 @@
 set -x
 set -euo pipefail
 
+# shellcheck disable=SC1091
+. lib.sh
+
+build_static_libattr() {
+    local version=2.4.46
+
+    local td
+    td="$(mktemp -d)"
+
+    pushd "${td}"
+
+    yum install -y gettext
+
+    curl --retry 3 -sSfL "https://download.savannah.nongnu.org/releases/attr/attr-${version}.src.tar.gz" -O
+    tar --strip-components=1 -xzf "attr-${version}.src.tar.gz"
+    ./configure
+    make "-j$(nproc)"
+    install -m 644 ./libattr/.libs/libattr.a /usr/lib64/
+
+    yum remove -y gettext
+
+    popd
+
+    rm -rf "${td}"
+}
+
+build_static_libcap() {
+    local version=2.22
+
+    local td
+    td="$(mktemp -d)"
+
+    pushd "${td}"
+
+    curl --retry 3 -sSfL "https://www.kernel.org/pub/linux/libs/security/linux-privs/libcap2/libcap-${version}.tar.xz" -O
+    tar --strip-components=1 -xJf "libcap-${version}.tar.xz"
+    make "-j$(nproc)"
+    install -m 644 libcap/libcap.a /usr/lib64/
+
+    popd
+
+    rm -rf "${td}"
+}
+
+build_static_pixman() {
+    local version=0.34.0
+
+    local td
+    td="$(mktemp -d)"
+
+    pushd "${td}"
+
+    curl --retry 3 -sSfL "https://www.cairographics.org/releases/pixman-${version}.tar.gz" -O
+    tar --strip-components=1 -xzf "pixman-${version}.tar.gz"
+    ./configure
+    make "-j$(nproc)"
+    install -m 644 ./pixman/.libs/libpixman-1.a /usr/lib64/
+
+    popd
+
+    rm -rf "${td}"
+}
+
 main() {
     local version=4.2.0
 
@@ -18,35 +81,47 @@ main() {
     local arch="${1}" \
           softmmu="${2:-}"
 
-    local dependencies=(
-        autoconf
-        automake
-        bison
-        bzip2
-        curl
-        flex
-        g++
-        libglib2.0-dev
-        libtool
-        make
-        patch
-        pkg-config
-        python3
-        zlib1g-dev
-        libcap-dev
-        libattr1-dev
-        libpixman-1-dev
+    install_packages \
+        autoconf \
+        automake \
+        bison \
+        bzip2 \
+        curl \
+        flex \
+        libtool \
+        make \
+        patch \
+        python3 \
+
+    if_centos install_packages \
+        gcc-c++ \
+        glib2-devel \
+        pkgconfig \
+        zlib-devel \
+        libcap-devel \
+        libattr-devel \
+        pixman-devel \
+        xz \
+        libfdt-devel \
+        glibc-static \
+        glib2-static \
+        pcre-static \
+        zlib-static
+
+    # these are not packaged as static libraries in centos; build them manually
+    if_centos build_static_libattr
+    if_centos build_static_libcap
+    if_centos build_static_pixman
+
+    if_ubuntu install_packages \
+        g++ \
+        libglib2.0-dev \
+        pkg-config \
+        zlib1g-dev \
+        libcap-dev \
+        libattr1-dev \
+        libpixman-1-dev \
         xz-utils
-    )
-
-    apt-get update
-    local purge_list=()
-    for dep in "${dependencies[@]}"; do
-        if ! dpkg -L "${dep}"; then
-            apt-get install --assume-yes --no-install-recommends "${dep}"
-            purge_list+=( "${dep}" )
-        fi
-    done
 
     local td
     td="$(mktemp -d)"
@@ -90,9 +165,7 @@ main() {
     # in /usr/bin. Create an appropriate symlink
     ln -s "/usr/local/bin/qemu-${arch}" "/usr/bin/qemu-${arch}-static"
 
-    if (( ${#purge_list[@]} )); then
-      apt-get purge --assume-yes --auto-remove "${purge_list[@]}"
-    fi
+    purge_packages
 
     popd
 
diff --git a/docker/xargo.sh b/docker/xargo.sh
index c349d96d8..5f7e2dcd6 100755
--- a/docker/xargo.sh
+++ b/docker/xargo.sh
@@ -3,20 +3,11 @@
 set -x
 set -euo pipefail
 
+# shellcheck disable=SC1091
+. lib.sh
+
 main() {
-    local dependencies=(
-        ca-certificates
-        curl
-    )
-
-    apt-get update
-    local purge_list=()
-    for dep in "${dependencies[@]}"; do
-        if ! dpkg -L "${dep}"; then
-            apt-get install --assume-yes --no-install-recommends "${dep}"
-            purge_list+=( "${dep}" )
-        fi
-    done
+    install_packages ca-certificates curl
 
     export RUSTUP_HOME=/tmp/rustup
     export CARGO_HOME=/tmp/cargo
@@ -29,9 +20,7 @@ main() {
 
     rm -r "${RUSTUP_HOME}" "${CARGO_HOME}"
 
-    if (( ${#purge_list[@]} )); then
-      apt-get purge --assume-yes --auto-remove "${purge_list[@]}"
-    fi
+    purge_packages
 
     rm "${0}"
 }