First pass at jl workflow (#69)

.github/workflows/rocker-rpyjl.yml

@@ -0,0 +1,62 @@
+name: rocker-rpy
+
+on:
+  schedule:
+    - cron: '0  21 * * 6'
+  push:
+    branches:
+      - 'master'
+      - 'main'
+
+jobs:
+  docker:
+    runs-on: ubuntu-20.04
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v2
+      -
+        name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v3
+        with:
+          # list of Docker images to use as base name for tags
+          images: |
+            geocompr/geocompr
+            ghcr.io/geocompx/docker
+          # generate Docker tags based on the following events/attributes
+          tags: |
+            type=raw,value=rocker-rpy
+            type=sha,prefix=rocker-rpy_
+            type=schedule,pattern={{date 'YYYY-MM-DD'}},prefix=rocker-rpy_
+      -
+        name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+      -
+        name: Login to DockerHub
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      -
+        name: Login to GitHub Container Registry
+        uses: docker/login-action@v1 
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      -
+        name: Build and push
+        uses: docker/build-push-action@v2
+        with:
+          context: rocker-rpy
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+
+
+
+