Merge pull request #164 from macbre/docker-build-action

GitHub action: check if a Docker image can be built

Author: macbre

.github/workflows/dockerimage.yml

@@ -0,0 +1,14 @@
+name: Check if a Docker image can be built
+
+on: [push]
+
+jobs:
+
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Build the Docker image
+      run: docker build . --tag macbre/index-digest:$(date +%s)