Github Actions

.github/workflows/push.yml

@@ -0,0 +1,32 @@
+name: Push to GitHub Container Registry
+
+on:
+  release:
+    types: [released]
+
+env:
+  IMAGE_NAME: reveal.js-docker
+
+jobs:
+  push:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check-out github repository
+        uses: actions/checkout@v2
+
+      - name: Log into GitHub Container Registry
+        run: echo "${{ secrets.SECRET_TOKEN }}" | docker login https://ghcr.io -u ${{ github.actor }} --password-stdin
+
+      - name: Build Docker image
+        run: docker build . --tag $IMAGE_NAME
+
+      - name: Push Docker image
+        run: |
+          IMAGE_ID=ghcr.io/${{ github.repository_owner }}/$IMAGE_NAME
+
+          IMAGE_ID=$(echo $IMAGE_ID | tr '[A-Z]' '[a-z]')
+
+          VERSION=$(echo "${{ github.ref }}" | sed -e 's,.*/\(.*\),\1,')
+
+          docker tag $IMAGE_NAME $IMAGE_ID:$VERSION
+          docker push $IMAGE_ID:$VERSION