initial commit

.gitea/workflows/test.yaml

@@ -0,0 +1,19 @@
+name: Go Test
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: https://github.com/actions/checkout@v4
+      - name: Set up Go
+        uses: https://github.com/actions/setup-go@v5
+        with:
+          go-version: '1.24.3'
+      - name: Run tests
+        run: go test -v ./...

action.yaml

@@ -0,0 +1,25 @@
+name: 'Build docker image'
+description: 'Docker builder for images + pushing, secret management, automatic versioning, and more'
+inputs:
+  path:
+    description: 'Path to image registry (e.g., ghcr.io/owner/repo)'
+    required: true
+  image-name:
+    description: 'The name of the image to build'
+    required: true
+  secrets:
+    desction: 'Secrets lists to pass to the build'
+    required: false
+    default: ''
+  dockerfile:
+    description: 'Path to the Dockerfile (default: Dockerfile)'
+    required: false
+    default: 'Dockerfile'
+outputs:
+  full_image_name:
+    description: 'Full image name'
+  image_tag:
+    description: 'Version of image'
+runs:
+  using: 'go'
+  main: 'main.go'

go.mod

@@ -0,0 +1,5 @@
+module git.nanobyte.cz/actions/go-dockerbuild
+
+go 1.24.3
+
+require github.com/sethvargo/go-githubactions v1.3.1

go.sum

@@ -0,0 +1,2 @@
+github.com/sethvargo/go-githubactions v1.3.1 h1:rlwwLRUaunWLQ1aN2o5Y+3s0xhaTC30YObCnilRx448=
+github.com/sethvargo/go-githubactions v1.3.1/go.mod h1:7/4WeHgYfSz9U5vwuToCK9KPnELVHAhGtRwLREOQV80=

main.go

@@ -0,0 +1,143 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"os/exec"
+	"strings"
+	"time"
+
+	gha "github.com/sethvargo/go-githubactions"
+)
+
+func getShortHash() string {
+	// Get short git commit hash
+	gitCmd := exec.Command("git", "rev-parse", "--short", "HEAD")
+	gitCmd.Dir = "."
+	gitCmd.Stderr = os.Stderr
+	hashBytes, err := gitCmd.Output()
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Failed to get git hash: %v\n", err)
+		os.Exit(1)
+	}
+	shortHash := string(hashBytes)
+	shortHash = shortHash[:len(shortHash)-1] // remove trailing newline
+	return shortHash
+}
+
+func parseSecrets(secretsInput string) map[string]string {
+	secrets := make(map[string]string)
+	if secretsInput != "" {
+		scanner := bufio.NewScanner(strings.NewReader(secretsInput))
+		for scanner.Scan() {
+			line := strings.TrimSpace(scanner.Text())
+			if line == "" || strings.HasPrefix(line, "#") {
+				continue
+			}
+			parts := strings.SplitN(line, "=", 2)
+			if len(parts) == 2 {
+				key := strings.TrimSpace(parts[0])
+				val := strings.Trim(strings.TrimSpace(parts[1]), `"`)
+				secrets[key] = val
+			}
+		}
+	}
+
+	return secrets
+
+}
+
+func buildDockerCommand(context string, dockerFile string, secrets map[string]string, tagLatest string, tagNightly string) *exec.Cmd {
+	// Parse secrets and write to .secrets file
+	buildArgs := []string{}
+	if len(secrets) > 0 {
+		f, err := os.CreateTemp("", ".secrets")
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "Failed to create .secrets file: %v\n", err)
+			os.Exit(1)
+		}
+		defer f.Close()
+		for secretKey, secretVal := range secrets {
+			_, err := fmt.Fprintf(f, "%s=%s\n", secretKey, secretVal)
+			if err != nil {
+				fmt.Fprintf(os.Stderr, "Failed to write secret: %v\n", err)
+				os.Exit(1)
+			}
+		}
+
+		buildArgs = append(buildArgs, "--secret", "id=build_secrets,src="+f.Name())
+	}
+
+	// Build command
+	buildArgsExpanded := append([]string{"build", context, "-f", dockerFile, "-t", tagLatest, "-t", tagNightly}, buildArgs...)
+	buildCmd := exec.Command("docker", buildArgsExpanded...)
+	buildCmd.Env = append(os.Environ(), "DOCKER_BUILDKIT=1")
+	buildCmd.Stdout = os.Stdout
+	buildCmd.Stderr = os.Stderr
+	return buildCmd
+}
+
+func pushDockerCommand(tag string) *exec.Cmd {
+	// Push nightly tag
+	pushNightlyCmd := exec.Command("docker", "push", tag)
+	pushNightlyCmd.Stdout = os.Stdout
+	pushNightlyCmd.Stderr = os.Stderr
+	return pushNightlyCmd
+}
+
+func main() {
+	basePath := gha.GetInput("path")
+	imageName := gha.GetInput("image-name")
+	dockerFile := gha.GetInput("dockerfile")
+	context := gha.GetInput("context")
+	secrets := parseSecrets(gha.GetInput("secrets"))
+	date := time.Now().Format("2006-01-02")
+	shortHash := getShortHash()
+
+	if basePath == "" {
+		fmt.Fprintln(os.Stderr, "Error: 'path' input is required")
+		os.Exit(1)
+	}
+
+	if imageName == "" {
+		fmt.Fprintln(os.Stderr, "Error: 'image-name' input is required")
+		os.Exit(1)
+	}
+
+	if basePath[len(basePath)-1] != '/' {
+		basePath += "/"
+	}
+
+	// Construct image names
+	imageBase := fmt.Sprintf("%s%s", basePath, imageName)
+	tagLatest := fmt.Sprintf("%s:latest", imageBase)
+	tagNightly := fmt.Sprintf("%s:nightly-%s.%s", imageBase, date, shortHash)
+
+	// Build Docker command
+	buildCmd := buildDockerCommand(context, dockerFile, secrets, tagLatest, tagNightly)
+	fmt.Println("Running:", buildCmd.String())
+	if err := buildCmd.Run(); err != nil {
+		fmt.Fprintf(os.Stderr, "Build failed: %v\n", err)
+		os.Exit(1)
+	}
+
+	// Push nightly tag
+	pushNightlyCmd := pushDockerCommand(tagNightly)
+	fmt.Println("Running:", pushNightlyCmd.String())
+	if err := pushNightlyCmd.Run(); err != nil {
+		fmt.Fprintf(os.Stderr, "Push nightly failed: %v\n", err)
+		os.Exit(1)
+	}
+
+	// Push latest tag
+	pushLatestCmd := pushDockerCommand(tagLatest)
+	fmt.Println("Running:", pushLatestCmd.String())
+	if err := pushLatestCmd.Run(); err != nil {
+		fmt.Fprintf(os.Stderr, "Push latest failed: %v\n", err)
+		os.Exit(1)
+	}
+
+	gha.SetOutput("image_tag", fmt.Sprintf("%s:%s", imageBase, shortHash))
+	gha.SetOutput("full_image_name", tagLatest)
+}

main_test.go

@@ -0,0 +1,103 @@
+package main
+
+import (
+	"os/exec"
+	"strings"
+	"testing"
+)
+
+// Test parseSecrets with various input formats
+func TestParseSecrets(t *testing.T) {
+	input := `
+SECRET1=foo
+SECRET2="bar"
+# This is a comment
+SECRET3=  baz
+`
+	expected := map[string]string{
+		"SECRET1": "foo",
+		"SECRET2": "bar",
+		"SECRET3": "baz",
+	}
+	result := parseSecrets(input)
+	if len(result) != len(expected) {
+		t.Fatalf("expected %d secrets, got %d", len(expected), len(result))
+	}
+	for k, v := range expected {
+		if result[k] != v {
+			t.Errorf("expected %s=%s, got %s", k, v, result[k])
+		}
+	}
+}
+
+// Test getShortHash (requires git repo)
+func TestGetShortHash(t *testing.T) {
+	cmd := exec.Command("git", "rev-parse", "--short", "HEAD")
+	out, err := cmd.Output()
+	if err != nil {
+		t.Skip("Skipping getShortHash test: not a git repo", err)
+	}
+	expected := strings.TrimSpace(string(out))
+	got := getShortHash()
+	if got != expected {
+		t.Errorf("expected hash %s, got %s", expected, got)
+	}
+}
+
+// Test buildDockerCommand returns a valid *exec.Cmd with context and dockerfile
+func TestBuildDockerCommandWithContextAndDockerfile(t *testing.T) {
+	secrets := map[string]string{
+		"FOO": "bar",
+	}
+	context := "./foo"
+	dockerfile := "Dockerfile"
+	tagLatest := "test:latest"
+	tagNightly := "test:nightly"
+	cmd := buildDockerCommand(context, dockerfile, secrets, tagLatest, tagNightly)
+	if cmd == nil {
+		t.Fatal("expected non-nil *exec.Cmd")
+	}
+	args := strings.Join(cmd.Args, " ")
+	if !strings.Contains(args, context) {
+		t.Errorf("docker build args missing context: %v", cmd.Args)
+	}
+	if !strings.Contains(args, "-f") || !strings.Contains(args, dockerfile) {
+		t.Errorf("docker build args missing dockerfile: %v", cmd.Args)
+	}
+	if !strings.Contains(args, tagLatest) || !strings.Contains(args, tagNightly) {
+		t.Errorf("docker build args missing tags: %v", cmd.Args)
+	}
+	if !strings.Contains(args, "--secret") {
+		t.Errorf("docker build args missing --secret: %v", cmd.Args)
+	}
+}
+
+// Test buildDockerCommand returns a valid *exec.Cmd without secrets
+func TestBuildDockerCommandNoSecrets(t *testing.T) {
+	secrets := map[string]string{}
+	context := "."
+	dockerfile := "Dockerfile"
+	tagLatest := "test:latest"
+	tagNightly := "test:nightly"
+	cmd := buildDockerCommand(context, dockerfile, secrets, tagLatest, tagNightly)
+	if cmd == nil {
+		t.Fatal("expected non-nil *exec.Cmd")
+	}
+	args := strings.Join(cmd.Args, " ")
+	if strings.Contains(args, "--secret") {
+		t.Errorf("docker build args should not contain --secret when no secrets are provided: %v", cmd.Args)
+	}
+}
+
+// Test pushDockerCommand returns a valid *exec.Cmd
+func TestPushDockerCommand(t *testing.T) {
+	tag := "test:latest"
+	cmd := pushDockerCommand(tag)
+	if cmd == nil {
+		t.Fatal("expected non-nil *exec.Cmd")
+	}
+	args := strings.Join(cmd.Args, " ")
+	if !strings.Contains(args, "push") || !strings.Contains(args, tag) {
+		t.Errorf("docker push args missing: %v", cmd.Args)
+	}
+}