update docker-compose version to latest and add new test scenarios

src/docker-outside-of-docker/README.md

@@ -20,7 +20,7 @@ Re-use the host docker socket, adding the Docker CLI to a container. Feature inv
 | version | Select or enter a Docker/Moby CLI version. (Availability can vary by OS version.) | string | latest |
 | moby | Install OSS Moby build instead of Docker CE | boolean | true |
 | mobyBuildxVersion | Install a specific version of moby-buildx when using Moby | string | latest |
-| dockerDashComposeVersion | Compose version to use for docker-compose (v1 or v2 or none) | string | v2 |
+| dockerDashComposeVersion | Compose version to use for docker-compose (v1 or v2 or none or latest) | string | latest |
 | installDockerBuildx | Install Docker Buildx | boolean | true |
 | installDockerComposeSwitch | Install Compose Switch (provided docker compose is available) which is a replacement to the Compose V1 docker-compose (python) executable. It translates the command line into Compose V2 docker compose then runs the latter. | boolean | true |
 

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

@@ -1,4 +1,5 @@
 {
+
   "id": "docker-outside-of-docker",
   "version": "1.8.0",
   "name": "Docker (docker-outside-of-docker)",
@@ -29,11 +30,12 @@
       "type": "string",
       "enum": [
         "none",
+        "latest",
         "v1",
         "v2"
       ],
-      "default": "v2",
-      "description": "Compose version to use for docker-compose (v1 or v2 or none)"
+      "default": "latest",
+      "description": "Compose version to use for docker-compose (v1 or v2 or none or latest)"
     },
     "installDockerBuildx": {
       "type": "boolean",

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

@@ -10,7 +10,7 @@
 DOCKER_VERSION="${VERSION:-"latest"}"
 USE_MOBY="${MOBY:-"true"}"
 MOBY_BUILDX_VERSION="${MOBYBUILDXVERSION:-"latest"}"
-DOCKER_DASH_COMPOSE_VERSION="${DOCKERDASHCOMPOSEVERSION:-"v2"}" # v1 or v2 or none
+DOCKER_DASH_COMPOSE_VERSION="${DOCKERDASHCOMPOSEVERSION:-"latest"}" # v1 or v2 or none or latest
 
 ENABLE_NONROOT_DOCKER="${ENABLE_NONROOT_DOCKER:-"true"}"
 SOURCE_SOCKET="${SOURCE_SOCKET:-"/var/run/docker-host.sock"}"

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

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+set -e
+
+# Optional: Import test library
+source dev-container-features-test-lib
+
+# Definition specific tests
+check "docker compose" bash -c "docker compose version | grep -E '5.[0-9]+.[0-9]+'"
+check "docker-compose" bash -c "docker-compose --version | grep -E '5.[0-9]+.[0-9]+'"
+check "installs compose-switch as docker-compose" bash -c "[[ -f /usr/local/bin/docker-compose ]]"
+
+# Report result
+reportResults

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

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+set -e
+
+# Optional: Import test library
+source dev-container-features-test-lib
+
+# Definition specific tests
+check "docker compose" bash -c "docker compose version | grep -E '5.[0-9]+.[0-9]+'"
+check "docker-compose" bash -c "docker-compose --version | grep -E '5.[0-9]+.[0-9]+'"
+check "installs compose-switch as docker-compose" bash -c "[[ -f /usr/local/bin/docker-compose ]]"
+
+# Report result
+reportResults

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

@@ -180,5 +180,25 @@
                 "moby": false
             }
         }
+    },
+     "docker_dash_compose_latest_moby": {
+        "image": "mcr.microsoft.com/devcontainers/base:ubuntu-24.04",
+        "features": {
+            "docker-outside-of-docker": {
+                "moby": true,
+                "dockerDashComposeVersion": "latest"
+            }
+        },
+        "containerUser": "vscode"
+    },
+    "docker_dash_compose_latest_no_moby": {
+        "image": "mcr.microsoft.com/devcontainers/base:ubuntu-24.04",
+        "features": {
+            "docker-outside-of-docker": {
+                "moby": false,
+                "dockerDashComposeVersion": "latest"
+            }
+        },
+        "containerUser": "vscode"
     }
 }