feat: add github action

.github/workflows/ci.yaml

@@ -5,6 +5,7 @@ on:
     branches: [main]
   pull_request:
 
+
 jobs:
   lint:
     runs-on: ubuntu-latest

.github/workflows/releaser-pleaser.yaml

@@ -0,0 +1,25 @@
+name: releaser-pleaser
+
+on:
+  push:
+    branches: [main, action] # TODO: Remove before merging
+  pull_request:
+    types:
+      - edited
+      - labeled
+      - unlabeled
+
+permissions:
+  contents: write
+  issues: write
+  pull-requests: write
+
+jobs:
+  releaser-pleaser:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - run: env
+      - uses: ./

action.yml

@@ -0,0 +1,24 @@
+name: 'releaser-pleaser'
+description: 'automated releases based on conventional commits'
+author: Julian Tölle
+branding:
+  icon: 'package'
+  color: 'red'
+inputs:
+  branch:
+    default: main
+    description: "This branch is used as the target for releases."
+  token:
+    description: 'GitHub token for creating and grooming release PRs, defaults to using secrets.GITHUB_TOKEN'
+    required: false
+    default: ${{ github.token }}
+outputs: {}
+runs:
+  using: 'docker'
+  image: ghcr.io/apricote/releaser-pleaser:v0.1.0
+  args:
+    - run
+    - --forge=github
+    - --branch=${{ inputs.branch }}
+  env:
+    GITHUB_TOKEN: ${{ inputs.token }}

forge.go

@@ -21,6 +21,7 @@ const (
 	GitHubPRStateClosed = "closed"
 	GitHubEnvAPIToken   = "GITHUB_TOKEN"
 	GitHubEnvUsername   = "GITHUB_USER"
+	GitHubEnvRepository = "GITHUB_REPOSITORY"
 	GitHubLabelColor    = "dedede"
 )
 
@@ -587,7 +588,16 @@ func (g *GitHubOptions) autodiscover() {
 	if username := os.Getenv(GitHubEnvUsername); username != "" {
 		g.Username = username
 	}
-	// TODO: Read settings from GitHub Actions env vars
+
+	if envRepository := os.Getenv(GitHubEnvRepository); envRepository != "" {
+		// GITHUB_REPOSITORY=apricote/releaser-pleaser
+		parts := strings.Split(envRepository, "/")
+		if len(parts) == 2 {
+			g.Owner = parts[0]
+			g.Repo = parts[1]
+			g.Repository = envRepository
+		}
+	}
 }
 
 type GitHubOptions struct {