Merge pull request #11 from flatcar/compose

Add docker compose CLI plugin sysext

create_docker_compose_sysext.sh

@@ -0,0 +1,25 @@
+#!/bin/bash
+set -euo pipefail
+
+export ARCH="${ARCH-x86_64}"
+SCRIPTFOLDER="$(dirname "$(readlink -f "$0")")"
+
+if [ $# -lt 2 ] || [ "$1" = "-h" ] || [ "$1" = "--help" ]; then
+  echo "Usage: $0 VERSION SYSEXTNAME"
+  echo "The script will download the docker compose CLI plugin binary (e.g., for 2.18.1) and create a sysext squashfs image with the name SYSEXTNAME.raw in the current folder."
+  echo "A temporary directory named SYSEXTNAME in the current folder will be created and deleted again."
+  echo "All files in the sysext image will be owned by root."
+  echo "To use arm64 pass 'ARCH=aarch64' as environment variable (current value is '${ARCH}')."
+  "${SCRIPTFOLDER}"/bake.sh --help
+  exit 1
+fi
+
+VERSION="$1"
+SYSEXTNAME="$2"
+
+rm -rf "${SYSEXTNAME}"
+mkdir -p "${SYSEXTNAME}"/usr/local/lib/docker/cli-plugins
+curl -o "${SYSEXTNAME}"/usr/local/lib/docker/cli-plugins/docker-compose -fsSL "https://github.com/docker/compose/releases/download/v${VERSION}/docker-compose-linux-${ARCH}"
+chmod +x "${SYSEXTNAME}"/usr/local/lib/docker/cli-plugins/docker-compose
+"${SCRIPTFOLDER}"/bake.sh "${SYSEXTNAME}"
+rm -rf "${SYSEXTNAME}"