add buildx, deprecate armhf

Author: aptalca

Dockerfile

@@ -25,7 +25,6 @@ RUN \
   mkdir -p \
     /root-layer/docker-bins \
     /tmp/docker_x86_64 \
-    /tmp/docker_armv7l \
     /tmp/docker_aarch64 && \
   curl -fo \
     /tmp/docker_x86_64.tgz -L \
@@ -34,13 +33,6 @@ RUN \
     /tmp/docker_x86_64.tgz -C \
     /tmp/docker_x86_64 --strip-components=1 && \
   cp /tmp/docker_x86_64/docker /root-layer/docker-bins/docker_x86_64 && \
-  curl -fo \
-    /tmp/docker_armv7l.tgz -L \
-    "https://download.docker.com/linux/static/stable/armhf/docker-${DOCKER_RELEASE}.tgz" && \
-  tar xf \
-    /tmp/docker_armv7l.tgz -C \
-    /tmp/docker_armv7l --strip-components=1 && \
-  cp /tmp/docker_armv7l/docker /root-layer/docker-bins/docker_armv7l && \
   curl -fo \
     /tmp/docker_aarch64.tgz -L \
     "https://download.docker.com/linux/static/stable/aarch64/docker-${DOCKER_RELEASE}.tgz" && \
@@ -52,9 +44,6 @@ RUN \
   curl -fo \
     /root-layer/docker-bins/docker-compose_x86_64 -L \
     "https://github.com/docker/compose/releases/download/v${COMPOSE_RELEASE}/docker-compose-linux-x86_64" && \
-  curl -fo \
-    /root-layer/docker-bins/docker-compose_armv7l -L \
-    "https://github.com/docker/compose/releases/download/v${COMPOSE_RELEASE}/docker-compose-linux-armv7" && \
   curl -fo \
     /root-layer/docker-bins/docker-compose_aarch64 -L \
     "https://github.com/docker/compose/releases/download/v${COMPOSE_RELEASE}/docker-compose-linux-aarch64" && \
@@ -71,16 +60,18 @@ RUN \
   curl -fo \
     /root-layer/docker-bins/compose-switch_aarch64 -L \
     "https://github.com/docker/compose-switch/releases/download/v${SWITCH_RELEASE}/docker-compose-linux-arm64" && \
-  echo "**** compile compose switch on armhf ****" && \
+  echo "**** retrieve latest buildx version ****" && \
+  if [ -z ${BUILDX_RELEASE+x} ]; then \
+    BUILDX_RELEASE=$(curl -sX GET "https://api.github.com/repos/docker/buildx/releases/latest" \
+      | awk '/tag_name/{print $4;exit}' FS='[""]'); \
+  fi && \
+  echo "**** grab buildx plugin ****" && \
   curl -fo \
-    /tmp/compose-switch.tar.gz -L \
-    "https://github.com/docker/compose-switch/archive/refs/tags/v${SWITCH_RELEASE}.tar.gz" && \
-  mkdir -p /tmp/compose-switch && \
-  tar xf \
-    /tmp/compose-switch.tar.gz -C \
-    /tmp/compose-switch --strip-components=1 && \
-  cd /tmp/compose-switch && \
-  CGO_ENABLED=0 GOOS=linux GOARCH=arm go build -ldflags="-s -w -X github.com/docker/compose-switch/internal.Version=${SWITCH_RELEASE}" -o /root-layer/docker-bins/compose-switch_armv7l ./main.go && \
+    /root-layer/docker-bins/buildx_x86_64 -L \
+    "https://github.com/docker/buildx/releases/download/${BUILDX_RELEASE}/buildx-${BUILDX_RELEASE}.linux-amd64" && \
+  curl -fo \
+    /root-layer/docker-bins/buildx_aarch64 -L \
+    "https://github.com/docker/buildx/releases/download/${BUILDX_RELEASE}/buildx-${BUILDX_RELEASE}.linux-arm64" && \
   chmod +x /root-layer/docker-bins/* && \
   rm -rf /tmp/*
 

README.md

@@ -1,6 +1,6 @@
 # Docker - Docker mod for all images
 
-This mod adds `docker` and `docker-compose` binaries to any linuxserver image.
+This mod adds the `docker` binary as wells as the `buildx` and the `compose` plug-ins to any linuxserver image.
 
 **IMPORTANT NOTE**: For docker access inside a container, a volume mapping needs to be added for `/var/run/docker.sock:/var/run/docker.sock:ro` in the container's docker run/create/compose. If you'd like to connect to a remote docker service instead, you don't have to map the docker sock; you can either set an env var for `DOCKER_HOST=remoteaddress` or use the docker cli option `-H`.
 

root/etc/s6-overlay/s6-rc.d/init-mod-universal-docker-setup/run

@@ -2,30 +2,35 @@
 
 echo "**** installing docker and docker compose ****"
 ARCH=$(uname -m)
-if [ -d "/docker-bins" ] ; then
+if [[ "${ARCH}" = "armv7l" ]]; then
+  echo "**** The universal docker mod no longer supports arm32v7/armhf per https://info.linuxserver.io/issues/2023-07-01-armhf/ ****"
+  exit 0
+fi
+if [[ -d "/docker-bins" ]] ; then
   echo "Copying over docker and docker-compose binaries"
   mkdir -p /usr/local/lib/docker/cli-plugins
   mv "/docker-bins/docker-compose_${ARCH}" /usr/local/lib/docker/cli-plugins/docker-compose
+  mv "/docker-bins/buildx_${ARCH}" /usr/local/lib/docker/cli-plugins/docker-buildx
   mv "/docker-bins/docker_${ARCH}" /usr/local/bin/docker
   mv "/docker-bins/compose-switch_${ARCH}" /usr/local/bin/docker-compose
   rm -rf /docker-bins
 else
   echo "**** docker and docker-compose already installed, skipping ****"
 fi
 
-if [ -S /var/run/docker.sock ]; then
+if [[ -S /var/run/docker.sock ]]; then
   DOCKER_GID=$(stat -c '%g' "/var/run/docker.sock")
   if id -G abc | grep -qw "$DOCKER_GID"; then
     exit 0
   else
     DOCKER_NAME=$(getent group "${DOCKER_GID}" | awk -F: '{print $1}')
-    if [ -z "${DOCKER_NAME}" ]; then
+    if [[ -z "${DOCKER_NAME}" ]]; then
       DOCKER_NAME="dockergroup"
       groupadd -g "${DOCKER_GID}" "${DOCKER_NAME}"
     fi
     usermod -aG "${DOCKER_NAME}" abc
   fi
-elif [ -n "$DOCKER_HOST" ]; then
+elif [[ -n "$DOCKER_HOST" ]]; then
   echo "**** Remote docker service $DOCKER_HOST will be used ****"
 else
   echo "**** Please map /var/run/docker.sock for access to docker service on host. Alternatively you can manually define a remote host address with the docker cli option -H ****"