Configure CI builds (#8)

.github/workflows/build-publish.yml

@@ -0,0 +1,34 @@
+name: Container Image
+
+on: push
+
+jobs:
+  build:
+    name: Build & Publish
+    runs-on: ubuntu-20.04
+    steps:
+      - name: Compute Labels
+        id: meta
+        uses: docker/metadata-action@v3
+        with:
+          images: quay.io/ffddorf/unms-exporter
+          # generate Docker tags based on the following events/attributes
+          tags: |
+            type=ref,event=branch
+            type=ref,event=pr
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=semver,pattern={{major}}
+            type=sha
+      - name: Login to Quay
+        uses: docker/login-action@v1
+        with:
+          registry: quay.io
+          username: ffddorf+github_actions
+          password: ${{ secrets.QUAY_BOT_PASSWORD }}
+      - name: Build Image
+        uses: docker/build-push-action@v2
+        with:
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          push: true