Add CI testing workflow

Add a CI test workflow
* Build binary.
* Run tests.

Signed-off-by: SuperQ <[email protected]>

.github/workflows/ci.yml

@@ -0,0 +1,31 @@
+name: Build
+
+on: 
+  - pull_request
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  test:
+    strategy:
+      matrix:
+        go: 
+          - "1.21"
+          - "1.22"
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
+      - name: install Go
+        uses: actions/setup-go@0c52d547c9bc32b1aa3301fd7a9cb496313a4491 # v5.0.0
+        with:
+          go-version: ${{ matrix.go }}
+      - name: Build
+        run: make build
+      - name: Test
+        run: make test-ci

go.mod

@@ -1,20 +1,16 @@
 module github.com/reddit/monoceros
 
-go 1.19
+go 1.21
 
 require (
 	github.com/go-cmd/cmd v1.4.1
-	github.com/stretchr/testify v1.8.0 // indirect
-	go.uber.org/zap v1.21.0
-	gopkg.in/yaml.v3 v3.0.1
-)
-
-require (
 	github.com/google/go-cmp v0.6.0
 	github.com/prometheus/client_golang v1.13.0
 	github.com/prometheus/common v0.37.0
 	github.com/prometheus/procfs v0.8.0
 	github.com/urfave/cli/v2 v2.11.1
+	go.uber.org/zap v1.21.0
+	gopkg.in/yaml.v3 v3.0.1
 )
 
 require (
@@ -28,6 +24,7 @@ require (
 	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
 	github.com/prometheus/client_model v0.2.0 // indirect
 	github.com/russross/blackfriday/v2 v2.1.0 // indirect
+	github.com/stretchr/testify v1.8.0 // indirect
 	github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673 // indirect
 	go.uber.org/atomic v1.7.0 // indirect
 	go.uber.org/multierr v1.6.0 // indirect