Docker multi-stage build and make compatible with automated builds (#45)

* Fix inconsistent indenting
* Remove duplicate code with multistage build
* Fix apt package versions [nano, curl, locales] that prevent build
* Remove wget
* Made PR compatible with docker hub automated builds

Co-authored-by: M. Mucahid Benlioglu <m.mucahidbenlioglu@gmail.com>

bullseye/Dockerfile

@@ -1,7 +1,7 @@
 ############################################################
 # Dockerfile that contains SteamCMD
 ############################################################
-FROM debian:bullseye-slim
+FROM debian:bullseye-slim as build_stage
 
 LABEL maintainer="walentinlamonos@gmail.com"
 ARG PUID=1000
@@ -16,19 +16,18 @@ RUN set -x \
 	&& apt-get install -y --no-install-recommends --no-install-suggests \
 		lib32stdc++6=10.2.1-6 \
 		lib32gcc-s1=10.2.1-6 \
-		wget=1.21-1+deb11u1 \
 		ca-certificates=20210119 \
-		nano=5.4-2 \
-		curl=7.74.0-1.3+deb11u1 \
-		locales=2.31-13+deb11u3 \
+		nano=5.4-2+deb11u1 \
+		curl=7.74.0-1.3+deb11u3 \
+		locales=2.31-13+deb11u4 \
 	&& sed -i -e 's/# en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/' /etc/locale.gen \
 	&& dpkg-reconfigure --frontend=noninteractive locales \
 	# Create unprivileged user
 	&& useradd -u "${PUID}" -m "${USER}" \
 	# Download SteamCMD, execute as user
 	&& su "${USER}" -c \
 		"mkdir -p \"${STEAMCMDDIR}\" \
-		&& wget -qO- 'https://steamcdn-a.akamaihd.net/client/installer/steamcmd_linux.tar.gz' | tar xvzf - -C \"${STEAMCMDDIR}\" \
+		&& curl -fsSL 'https://steamcdn-a.akamaihd.net/client/installer/steamcmd_linux.tar.gz' | tar xvzf - -C \"${STEAMCMDDIR}\" \
 		&& \"./${STEAMCMDDIR}/steamcmd.sh\" +quit \
 		&& mkdir -p \"${HOMEDIR}/.steam/sdk32\" \
 		&& ln -s \"${STEAMCMDDIR}/linux32/steamclient.so\" \"${HOMEDIR}/.steam/sdk32/steamclient.so\" \
@@ -38,10 +37,11 @@ RUN set -x \
 	&& ln -s "${STEAMCMDDIR}/linux64/steamclient.so" "/usr/lib/x86_64-linux-gnu/steamclient.so" \
 	# Clean up
 	&& apt-get remove --purge --auto-remove -y \
-		wget \
 	&& rm -rf /var/lib/apt/lists/*
 
+FROM build_stage AS bullseye-root
+WORKDIR ${STEAMCMDDIR}
+
+FROM bullseye-root AS bullseye
 # Switch to user
 USER ${USER}
-
-WORKDIR ${STEAMCMDDIR}

bullseye/hooks/build

@@ -0,0 +1,5 @@
+#!/bin/bash
+BUILD_PATH=$(echo ${DOCKERFILE_PATH}| sed 's#/#..#g' | sed 's#[a-zA-Z0-9]\+#/#g' | cut -c 2- )
+
+docker build --target=bullseye -f $(basename ${DOCKERFILE_PATH}) -t $DOCKER_REPO:latest -t $DOCKER_REPO:steam ${BUILD_PATH}.
+docker build --target=bullseye-root -f $(basename ${DOCKERFILE_PATH}) -t $DOCKER_REPO:root ${BUILD_PATH}.

bullseye/hooks/push

@@ -0,0 +1,2 @@
+#!/bin/bash
+docker push --all-tags ${DOCKER_REPO}