Add initial action to build and push the image

.editorconfig

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+# Editor configuration, see https://editorconfig.org
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_size = 2
+insert_final_newline = true
+indent_style = space

.github/workflows/build.yaml

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+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+jobs:
+  find:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Find subfolders to build
+        id: find
+        # List the two subdirectories under the src directory, and trim src/ off the front of the path
+        # Like: fabric-runtime/1.2
+        run: find src -mindepth 2 -maxdepth 2 -type d | sed 's|^src/||'
+
+      - name: Set outputs
+        id: set-outputs
+        # Output them with commas, like: fabric-runtime/1.2,fabric-runtime/1.3
+        run: echo "::set-output name=subfolders::$(echo "${{ steps.find.outputs.stdout }}" | tr '\n' ',')"
+
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        subfolder: ${{ steps.set-outputs.outputs.subfolders }}
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Parse out the image name and tag
+        id: parse
+        run: |
+          # The first part is the image name
+          IMAGE_NAME=$(echo ${{ matrix.subfolder }} | cut -d / -f 1)
+          echo "::set-env name=IMAGE_NAME::$IMAGE_NAME"
+
+          # And the second part is the image tag
+          IMAGE_TAG=$(echo ${{ matrix.subfolder }} | cut -d / -f 2)
+          echo "::set-env name=IMAGE_TAG::$IMAGE_TAG"
+
+      - name: Build images
+        uses: devcontainers/[email protected]
+        # Options: https://github.com/devcontainers/ci/blob/main/action.yml
+        with:
+          imageName: ghcr.io/${{ github.repository }}/${{ env.IMAGE_NAME }}
+          cacheFrom: ghcr.io/${{ github.repository }}/${{ env.IMAGE_NAME }}
+          imageTag: ${{ env.IMAGE_TAG }}
+          push: always
+          subFolder: src/${{ matrix.subfolder }}