add unit tests to ci (#65)

- **add unit test coverage to CI**
- **add Make target docker-test to run unit tests**

.github/workflows/go.yml

@@ -1,6 +1,21 @@
 name: build
 on: [push]
 jobs:
+  test:
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest]
+        arch: [amd64]
+        go-version: [ "1.22.x"]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: run unit tests
+        run:  make docker-test
+
   build_linux:
     runs-on: ubuntu-22.04
     steps:

Makefile

@@ -20,6 +20,10 @@ $(cache_dir): $(cache_dir)/go
 $(cache_dir)/go:
 	mkdir -p $(cache_dir)/go
 
+docker-test: docker-$(distro)-base
+	$(docker) $(docker_run_cmd) --rm katzen/$(distro)_base \
+		go test -coverprofile=coverage.out -race -v -failfast -timeout 30m ./...
+
 docker-build-linux: docker-$(distro)-base
 	@([ "$(distro)" = "debian" ] || [ "$(distro)" = "alpine" ]) || \
 		(echo "can only docker-build-linux for debian or alpine, not $(distro)" && false)