gh: build and push container image

.github/workflows/build-and-push-container-image.yml

@@ -0,0 +1,19 @@
+name: build and push container image
+
+on:
+  pull_request:
+  push:
+    branches: [main]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+      with:
+        fetch-tags: true
+    - name: Install dependencies
+      run: lein deps
+
+    - name: build
+      run: make