Add automation via GH actions (#1)

.github/workflows/release.yml

@@ -0,0 +1,26 @@
+name: Release
+
+on:
+  push:
+    branches:
+      - $default-branch
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Login to DockerHub
+        uses: docker/login-action@v1 
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v2
+        with:
+          push: true
+          tags: erichripko/pack.yaml
+          context: .
+          file: pack.yaml

.github/workflows/verify.yml

@@ -0,0 +1,28 @@
+name: Verify
+
+on: push
+
+jobs:
+  verify:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Set up Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.15
+
+      - name: Build
+        run: go build -v ./...
+
+      - name: Lint
+        uses: golangci/golangci-lint-action@v2
+        with:
+          version: v1.37
+
+      - name: Test
+        run: go test -v -coverprofile=coverage.txt -covermode=atomic ./...
+
+      - name: Upload coverage report
+        uses: codecov/codecov-action@v1

.golangci.yml

@@ -0,0 +1,3 @@
+run:
+  # Exclude tests
+  tests: false

internal/app/packer-frontend/build.go

@@ -19,7 +19,6 @@ import (
 
 const (
 	keyMultiPlatform = "multi-platform"
-	keyContextSubDir = "contextsubdir"
 )
 
 // Build the image with this frontend.
@@ -29,6 +28,7 @@ func Build(ctx context.Context, c client.Client) (*client.Result, error) {
 
 // BuildWithService uses the provided container image build service to
 // perform the build.
+//nolint:gocyclo // Frontends are complex
 func BuildWithService(ctx context.Context, c client.Client, svc cib.Service) (*client.Result, error) {
 	opts := svc.GetOpts()
 
@@ -105,7 +105,8 @@ func BuildWithService(ctx context.Context, c client.Client, svc cib.Service) (*c
 					img.Config.Cmd = metadata.Command
 				} else {
 					// Find command
-					cmd, err := cib.FindCommand(ctx, ref)
+					var cmd string
+					cmd, err = cib.FindCommand(ctx, ref)
 					if err != nil {
 						return err
 					}

pack.yaml

@@ -1,2 +1,2 @@
-# syntax = pack.yaml
+# syntax = erichripko/pack.yaml
 entrypoint: ["packer-frontend"]

pkg/cib/service.go

@@ -69,7 +69,9 @@ func (s *service) SrcState() (state llb.State, err error) {
 	if s.src == nil {
 		err = s.initSrc()
 	}
-	state, err = s.src.ToState()
+	if err == nil {
+		state, err = s.src.ToState()
+	}
 	return
 }
 

pkg/plugins/golang/golang.go

@@ -18,7 +18,7 @@ import (
 )
 
 // Regular expression for detecting a Go project.
-var fileRegex = regexp.MustCompile("(?:.*\\.go)|(?:go\\.mod)|(?:go\\.sum)")
+var fileRegex = regexp.MustCompile(`(?:.*\.go)|(?:go\.mod)|(?:go\.sum)`)
 
 // Errors returned by the plugin.
 var (