Merge pull request #455 from Interlisp/fgh_buildBuilder

Add a workflow to build a Docker image with all tools to build Maiko for Linux

.github/workflows/buildBuilderImage.yml

@@ -0,0 +1,93 @@
+#*******************************************************************************
+# buildBuilderImage.yml
+#
+# Workflow to build a multiarch Docker image that includes all of the tools for
+# building maiko for linux.  Intended to be used (exclusively?) by the github
+# actions that build maiko releases - e.g., buildRelease.yml.
+#
+# The purpose is to make the maiko github actions quicker and less resource
+# consuming by not hving to intll the tools every time and instead just reuse
+# this Docker image.
+#
+#
+# Copyright 2023 by Interlisp.org
+#
+# Frank Haasz 2023-02-21
+#
+# ******************************************************************************
+
+name: 'Build/Push Builder Image'
+
+# Run this workflow on ...
+on: workflow_dispatch
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+
+  buildBuilder:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      # Checkout just the relevant Dockerfile
+      - name: Checkout files
+        uses: Bhacaz/checkout-files@v2
+        with:
+          files: .github/workflows/Dockerfile_builder
+
+      # Checkout the branch of maiko code  
+      #- name: Checkout
+      #  uses: actions/checkout@v3
+
+      # Setup docker environment variables
+      - name: Setup Docker Environment Variables
+        id: docker_env
+        run: |
+          DOCKER_REGISTRY="ghcr.io"
+          DOCKER_NAMESPACE=$(echo "${{ github.repository_owner }}" | tr '[:upper:]' '[:lower:]')
+          DOCKER_REPO=${DOCKER_REGISTRY}/${DOCKER_NAMESPACE}/maiko-builder
+          DOCKER_TAGS="${DOCKER_REPO}:latest
+          echo "BUILD_DATE=$(date -u +'%Y-%m-%dT%H:%M:%SZ')" >> ${GITHUB_ENV}
+          echo "DOCKER_TAGS=${DOCKER_TAGS}" >> ${GITHUB_ENV}
+
+      # Setup the Docker Machine Emulation environment.  
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@master
+        with:
+          platforms: linux/amd64,linux/arm64,linux/arm/v7
+
+      # Setup the Docker Buildx funtion
+      - name: Set up Docker Buildx
+        id: buildx
+        uses: docker/setup-buildx-action@master
+
+      # Login to ghcr.io
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v2 
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      # Do the Docker Build using the Dockerfile_builder in the repository we
+      # checked out.  Push the result to ghcr.io.
+      #
+      - name: Build Docker Images for Push to GHCR
+        if: ${{ true }}
+        uses: docker/build-push-action@v4
+        with:
+          builder: ${{ steps.buildx.outputs.name }}
+          build-args: |
+            BUILD_DATE=${{ env.BUILD_DATE }}
+          context: ./.github/workflows
+          file: ./.github/workflows/Dockerfile_builder
+          platforms: linux/amd64,linux/arm64,linux/arm/v7
+          # Push the result to DockerHub
+          push: true
+          tags: ${{ env.DOCKER_TAGS }}
+
+          
+######################################################################################