[docker-outside-of-docker] compose-switch can fallback to previous ve…

…rsion (#901)

* compose-switch fallback previous version

* changes required

src/docker-outside-of-docker/devcontainer-feature.json

@@ -1,6 +1,6 @@
 {
     "id": "docker-outside-of-docker",
-    "version": "1.4.2",
+    "version": "1.4.3",
     "name": "Docker (docker-outside-of-docker)",
     "documentationURL": "https://github.com/devcontainers/features/tree/main/src/docker-outside-of-docker",
     "description": "Re-use the host docker socket, adding the Docker CLI to a container. Feature invokes a script to enable using a forwarded Docker socket within a container to run Docker commands.",

src/docker-outside-of-docker/install.sh

@@ -99,6 +99,22 @@ find_version_from_git_tags() {
     echo "${variable_name}=${!variable_name}"
 }
 
+# Function to fetch the previous version of the plugin
+get_previous_version() {
+    repo_url=$1
+    # this would del the assets key and then get the second encountered tag_name's value from the filtered array of objects
+    curl -s "$repo_url" | jq -r 'del(.[].assets) | .[0].tag_name' 
+}
+
+
+install_compose_switch_fallback() {
+    echo -e "\n(!) Failed to fetch the latest artifacts for compose-switch v${compose_switch_version}..."
+    previous_version=$(get_previous_version "https://api.github.com/repos/docker/compose-switch/releases")
+    echo -e "\nAttempting to install ${previous_version}"
+    compose_switch_version=${previous_version#v}
+    curl -fsSL "https://github.com/docker/compose-switch/releases/download/v${compose_switch_version}/docker-compose-linux-${architecture}" -o /usr/local/bin/docker-compose
+}
+
 # Ensure apt is in non-interactive to avoid prompts
 export DEBIAN_FRONTEND=noninteractive
 
@@ -255,7 +271,7 @@ if [ "${DOCKER_DASH_COMPOSE_VERSION}" != "none" ]; then
         echo "(*) Installing compose-switch as docker-compose..."
         compose_switch_version="latest"
         find_version_from_git_tags compose_switch_version "https://github.com/docker/compose-switch"
-        curl -fsSL "https://github.com/docker/compose-switch/releases/download/v${compose_switch_version}/docker-compose-linux-${architecture}" -o /usr/local/bin/docker-compose
+        curl -fsSL "https://github.com/docker/compose-switch/releases/download/v${compose_switch_version}/docker-compose-linux-${architecture}" -o /usr/local/bin/docker-compose || install_compose_switch_fallback
         chmod +x /usr/local/bin/docker-compose
         # TODO: Verify checksum once available: https://github.com/docker/compose-switch/issues/11
     fi

test/docker-outside-of-docker/docker_build_compose_fallback.sh

@@ -0,0 +1,36 @@
+#!/bin/bash
+
+# Optional: Import test library
+source dev-container-features-test-lib
+
+check "installs compose-switch as docker-compose" bash -c "[[ -f /usr/local/bin/docker-compose ]]"
+
+# Fetch host/container arch.
+architecture="$(dpkg --print-architecture)"
+
+repo_url="https://api.github.com/repos/docker/compose-switch/releases"
+
+# Function to fetch the previous version of the plugin
+get_previous_version() {
+    sudo curl -s "$repo_url" | jq -r 'del(.[].assets) | .[0].tag_name' # this would del the assets key and then get the second encountered tag_name's value from the filtered array of objects
+}
+
+install_compose_switch_fallback() {
+    echo -e "\n(!) Failed to fetch the latest artifacts for compose-switch ${test_compose_switch_version}..."
+    previous_version=$(get_previous_version)
+    echo -e "\nAttempting to install ${previous_version}"
+    compose_switch_version=${previous_version}
+    sudo curl -fsSL "https://github.com/docker/compose-switch/releases/download/${compose_switch_version}/docker-compose-linux-${architecture}" -o /usr/local/bin/docker-compose
+}
+
+install_compose-switch_as_docker-compose() {
+    echo "(*) Installing compose-switch as docker-compose..."
+    test_compose_switch_version="1.2.xyz"
+    echo -e "\nTesting with $test_compose_switch_version..."
+    sudo curl -fsSL "https://github.com/docker/compose-switch/releases/download/${test_compose_switch_version}/docker-compose-linux-${architecture}" -o /usr/local/bin/docker-compose || install_compose_switch_fallback
+    sudo chmod +x /usr/local/bin/docker-compose
+}
+
+install_compose-switch_as_docker-compose
+
+check "installs compose-switch as docker-compose" bash -c "[[ -f /usr/local/bin/docker-compose ]]"

test/docker-outside-of-docker/scenarios.json

@@ -1,4 +1,14 @@
 {
+    "docker_build_compose_fallback": {
+        "image": "mcr.microsoft.com/devcontainers/base:ubuntu-20.04",
+        "features": {
+            "docker-outside-of-docker": {
+                "moby": false,
+                "dockerDashComposeVersion": "latest"
+            }
+        },
+        "containerUser": "vscode"
+    },
     "docker_init_moby": {
         "image": "mcr.microsoft.com/devcontainers/base:ubuntu-20.04",
         "features": {