Test only the base build action from bluebuild

.github/workflows/actions/build-composite.yml

@@ -36,6 +36,13 @@ inputs:
       Disable this with 'false' if your image doesn't take up a lot of space and you'd rather have shorter build times.
     required: false
     default: "true"
+  use_unstable_cli:
+    description: |
+      If true, this action pulls the `main` branch of blue-build/cli instead of the stable version the current action version is configured to use by default. 
+      This feature is useful for testing new features, but should not be used in production.
+      Input must match the string 'true' for the unstable version to be used.
+    required: false
+    default: "false"
   cli_version:
     description: |
       Set this with a tag, sha, or branch name for the blue-build/cli repo to use that particular version of the CLI tool. This will override the `use_unstable_cli` input for the action.
@@ -44,7 +51,7 @@ inputs:
     description: |
       The container registry to push the built image to.
     required: false
-    default: "git.hydrosaber.com"
+    default: "ghcr.io"
   registry_namespace:
     description: |
       The namespace on the registry to push to.
@@ -52,6 +59,15 @@ inputs:
       Example: `ublue-os`
     required: false
     default: ${{ github.repository_owner }}
+  rechunk:
+    description: |
+      Rechunk the ostree-based result images with [github.com/hhd-dev/rechunk](https://github.com/hhd-dev/rechunk) for more efficient diffs and updates. (lower image size, better download speed, better update resuming)
+
+      Will make your builds considerably slower. This is an experimental option, as it can cause issues with file permissions in some scenarios, so enable on your own risk.
+
+      Internally builds squashed images with podman to further reduce the image size.
+    required: false
+    default: "false"
   use_cache:
     description: |
       Make use of layer cache by pushing the layers to the registry. Input must match the string 'true' for the step to be enabled.
@@ -99,6 +115,14 @@ runs:
       uses: jlumbroso/free-disk-space@54081f138730dfa15788a46383842cd2f914a1be # v1.3.1
       if: ${{ inputs.maximize_build_space == 'true' }}
 
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@18ce135bb5112fa8ce4ed6c17ab05699d7f3a5e0 # v3.11.0
+      if: ${{ inputs.squash != 'true' && inputs.rechunk != 'true' }}
+      with:
+        install: true
+        driver: docker-container
+        cache-binary: ${{ inputs.use_cache }}
+
     - name: Get Ubuntu version
       id: ubuntu_version
       shell: bash
@@ -109,6 +133,7 @@ runs:
 
     # that is compatible with BlueBuild
     - name: Setup Podman
+      if: ${{ (inputs.squash == 'true' || inputs.rechunk == 'true') && steps.ubuntu_version.outputs.version == '22.04' }}
       shell: bash
       run: |
         # from https://askubuntu.com/questions/1414446/whats-the-recommended-way-of-installing-podman-4-in-ubuntu-22-04
@@ -135,7 +160,9 @@ runs:
       env:
         RECIPE: ${{ inputs.recipe }}
       run: |
-        if [ -n "${{ inputs.cli_version }}" ]; then
+        if [[ "${{ inputs.use_unstable_cli }}" == "true" && -z "${{ inputs.cli_version }}" ]]; then
+          CLI_VERSION_TAG="main"
+        elif [ -n "${{ inputs.cli_version }}" ]; then
           CLI_VERSION_TAG="${{ inputs.cli_version }}"
         else
           CLI_VERSION_TAG="v0.9"
@@ -180,4 +207,18 @@ runs:
         CLICOLOR_FORCE: "1"
         BUILD_OPTS: ${{ inputs.build_opts }}
       run: |
-        sudo -E bluebuild build -v --push --rechunk ${BUILD_OPTS} ${RECIPE_PATH}
+        if [ "${{ inputs.squash }}" = "true" ]; then
+          BUILD_OPTS="--build-driver podman --squash $BUILD_OPTS"
+        fi
+
+        RUN_SUDO=""
+        if [ "${{ inputs.rechunk }}" = "true" ]; then
+          RUN_SUDO=1
+          BUILD_OPTS="--rechunk $BUILD_OPTS"
+        fi
+
+        if [ -n "$RUN_SUDO" ]; then
+          sudo -E bluebuild build -v --push ${BUILD_OPTS} ${RECIPE_PATH}
+        else
+          bluebuild build -v --push ${BUILD_OPTS} ${RECIPE_PATH}
+        fi