Implement cross-platform compatibility using composite action with Docker wrapper

Co-authored-by: ChristophShyper <45788587+ChristophShyper@users.noreply.github.com>

Author: Copilot

README.md

@@ -1,6 +1,7 @@
 # GitHub Action for committing changes to a repository.
 
 ### Supporting `amd64` and `aarch64/arm64` images!
+### **Cross-platform compatible** - Works on Linux, Windows, and macOS runners!
 
 Useful in combination with my other action [devops-infra/action-pull-request](https://github.com/devops-infra/action-pull-request).
 
@@ -10,6 +11,7 @@ And GitHub Packages: [ghcr.io/devops-infra/action-commit-push/action-commit-push
 
 
 Features:
+* **Cross-platform support** - Works on Linux, Windows (with Docker Desktop), and macOS runners.
 * Can add a custom prefix to commit message title by setting `commit_prefix`.
 * As a commit message title will use `commit_message` if set, or `commit_prefix` and add changed files or just list of changed files.
 * Can create a new branch when `target_branch` is set.
@@ -71,6 +73,41 @@ Features:
 | branch_name   | Name of the branch code was pushed into.                                 |
 
 
+## Platform Requirements
+
+This action now supports **cross-platform execution**:
+
+- **Linux runners**: Fully supported (default GitHub Actions environment)
+- **Windows runners**: Requires Docker to be installed (e.g., Docker Desktop, Rancher Desktop)
+- **macOS runners**: Requires Docker to be installed
+
+### Windows Runner Setup
+
+To use this action on Windows runners, ensure Docker is available:
+
+```yaml
+jobs:
+  commit-changes:
+    runs-on: windows-latest
+    steps:
+      - name: Setup Docker (if needed)
+        # Most GitHub-hosted Windows runners have Docker pre-installed
+        # For self-hosted runners, ensure Docker Desktop is installed
+        
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        
+      - name: Commit and push changes
+        uses: devops-infra/action-commit-push@master
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          commit_message: "Cross-platform commit from Windows"
+```
+
+### Note
+The action automatically detects the platform and uses Docker accordingly. On all platforms, it runs the same containerized environment to ensure consistent behavior.
+
+
 ## Examples
 
 Commit and push changes to currently checked out branch.

action.yml

@@ -48,10 +48,22 @@ outputs:
   branch_name:
     description: Name of the branch code was pushed into
 runs:
-  using: docker
-  image: docker://devopsinfra/action-commit-push:v0.10.0
-  env:
-    GITHUB_TOKEN: ${{ inputs.github_token }}
+  using: composite
+  steps:
+    - name: Run action
+      run: ${{ github.action_path }}/run.sh
+      shell: bash
+      env:
+        GITHUB_TOKEN: ${{ inputs.github_token }}
+        INPUT_ADD_TIMESTAMP: ${{ inputs.add_timestamp }}
+        INPUT_AMEND: ${{ inputs.amend }}
+        INPUT_COMMIT_PREFIX: ${{ inputs.commit_prefix }}
+        INPUT_COMMIT_MESSAGE: ${{ inputs.commit_message }}
+        INPUT_FORCE: ${{ inputs.force }}
+        INPUT_FORCE_WITHOUT_LEASE: ${{ inputs.force_without_lease }}
+        INPUT_NO_EDIT: ${{ inputs.no_edit }}
+        INPUT_ORGANIZATION_DOMAIN: ${{ inputs.organization_domain }}
+        INPUT_TARGET_BRANCH: ${{ inputs.target_branch }}
 branding:
   color: purple
   icon: upload-cloud

run.sh

@@ -0,0 +1,68 @@
+#!/usr/bin/env bash
+
+set -e
+
+# Detect the operating system
+OS_TYPE="$(uname -s)"
+echo "Running on OS: $OS_TYPE"
+
+# Check if Docker is available
+if ! command -v docker &> /dev/null; then
+    echo "Error: Docker is not available. This action requires Docker to be installed."
+    echo "On Windows runners, please ensure Docker Desktop or similar is installed."
+    echo "On Linux/macOS runners, Docker should be available by default."
+    exit 1
+fi
+
+# Docker image to use
+DOCKER_IMAGE="docker://devopsinfra/action-commit-push:v0.10.0"
+
+# Prepare environment variables for docker run
+ENV_ARGS=()
+ENV_ARGS+=("-e" "GITHUB_TOKEN=${GITHUB_TOKEN}")
+ENV_ARGS+=("-e" "GITHUB_ACTOR=${GITHUB_ACTOR}")
+ENV_ARGS+=("-e" "GITHUB_REPOSITORY=${GITHUB_REPOSITORY}")
+ENV_ARGS+=("-e" "GITHUB_WORKSPACE=${GITHUB_WORKSPACE}")
+ENV_ARGS+=("-e" "GITHUB_OUTPUT=${GITHUB_OUTPUT}")
+
+# Add input environment variables
+ENV_ARGS+=("-e" "INPUT_ADD_TIMESTAMP=${INPUT_ADD_TIMESTAMP}")
+ENV_ARGS+=("-e" "INPUT_AMEND=${INPUT_AMEND}")
+ENV_ARGS+=("-e" "INPUT_COMMIT_PREFIX=${INPUT_COMMIT_PREFIX}")
+ENV_ARGS+=("-e" "INPUT_COMMIT_MESSAGE=${INPUT_COMMIT_MESSAGE}")
+ENV_ARGS+=("-e" "INPUT_FORCE=${INPUT_FORCE}")
+ENV_ARGS+=("-e" "INPUT_FORCE_WITHOUT_LEASE=${INPUT_FORCE_WITHOUT_LEASE}")
+ENV_ARGS+=("-e" "INPUT_NO_EDIT=${INPUT_NO_EDIT}")
+ENV_ARGS+=("-e" "INPUT_ORGANIZATION_DOMAIN=${INPUT_ORGANIZATION_DOMAIN}")
+ENV_ARGS+=("-e" "INPUT_TARGET_BRANCH=${INPUT_TARGET_BRANCH}")
+
+# Volume mount arguments
+VOLUME_ARGS=()
+VOLUME_ARGS+=("-v" "${GITHUB_WORKSPACE}:/github/workspace")
+
+# Working directory
+WORK_DIR="/github/workspace"
+
+# Remove docker:// prefix from image name if present
+DOCKER_IMAGE_NAME="${DOCKER_IMAGE#docker://}"
+
+echo "Using Docker image: $DOCKER_IMAGE_NAME"
+echo "Workspace: $GITHUB_WORKSPACE"
+
+# Attempt to pull the image if it doesn't exist locally
+if ! docker image inspect "$DOCKER_IMAGE_NAME" &> /dev/null; then
+    echo "Docker image not found locally, attempting to pull: $DOCKER_IMAGE_NAME"
+    if ! docker pull "$DOCKER_IMAGE_NAME"; then
+        echo "Error: Failed to pull Docker image: $DOCKER_IMAGE_NAME"
+        echo "Please ensure the image exists and is accessible."
+        exit 1
+    fi
+fi
+
+# Run the Docker container
+echo "Running Docker container..."
+docker run --rm \
+  "${ENV_ARGS[@]}" \
+  "${VOLUME_ARGS[@]}" \
+  -w "$WORK_DIR" \
+  "$DOCKER_IMAGE_NAME"