Add Gitea Actions CI pipeline

Add .gitea/workflows/ci.yml with test → build → docker pipeline.
Docker images pushed to gitea.mrixs.me/mrixs/ym-dl on master and v* tags.

Requires PACKAGES_TOKEN repo secret (read:package, write:package).

.gitea/workflows/ci.yml

@@ -0,0 +1,105 @@
+name: CI/CD
+
+# Required repo secret: PACKAGES_TOKEN
+# Generate at: Gitea → User Settings → Applications → Generate New Token
+# Scopes: read:package, write:package
+# Save as: Repository → Settings → Actions → Secrets → PACKAGES_TOKEN
+# Note: GITHUB_TOKEN is read-only for packages in Gitea (issue #23642).
+
+on:
+  push:
+    branches: ["master"]
+    tags: ["v*"]
+  pull_request:
+    branches: ["master"]
+
+env:
+  GO_VERSION: "1.27.2"
+  REGISTRY: "gitea.mrixs.me"
+  IMAGE_NAME: "ym-dl"
+  # Using a fixed username since GITEA_REPOSITORY_OWNER may not be available
+  # Replace with your actual Gitea username (must be lowercase for Docker)
+  USERNAME: "mrixs"
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-go@v5
+        with:
+          go-version: ${{ env.GO_VERSION }}
+
+      - name: Cache Go modules
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/go/pkg/mod
+            ~/.cache/go-build
+          key: go-test-${{ runner.os }}-${{ hashFiles('go.sum') }}
+          restore-keys: |
+            go-test-${{ runner.os }}-
+
+      - name: Download Go modules
+        run: go mod download
+
+      - name: Run tests
+        run: go test ./... -v -race -cover
+
+  build:
+    runs-on: ubuntu-latest
+    needs: test
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-go@v5
+        with:
+          go-version: ${{ env.GO_VERSION }}
+
+      - name: Cache Go modules and build cache
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/go/pkg/mod
+            ~/.cache/go-build
+          key: go-build-${{ runner.os }}-${{ hashFiles('go.sum') }}
+          restore-keys: |
+            go-build-${{ runner.os }}-
+
+      - name: Download Go modules
+        run: go mod download
+
+      - name: Build binary
+        run: go build -o ym-dl ./cmd/ym-dl
+
+  docker:
+    runs-on: ubuntu-latest
+    needs: build
+    if: github.ref == 'refs/heads/master' || startsWith(github.ref, 'refs/tags/v')
+    permissions:
+      packages: write
+      contents: read
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to Gitea Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ env.USERNAME }}
+          password: ${{ secrets.PACKAGES_TOKEN }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          tags: |
+            ${{ env.REGISTRY }}/${{ env.USERNAME }}/${{ env.IMAGE_NAME }}:latest
+            ${{ env.REGISTRY }}/${{ env.USERNAME }}/${{ env.IMAGE_NAME }}:${{ github.sha }}
+          cache-from: type=registry,ref=${{ env.REGISTRY }}/${{ env.USERNAME }}/${{ env.IMAGE_NAME }}:buildcache
+          cache-to: type=registry,ref=${{ env.REGISTRY }}/${{ env.USERNAME }}/${{ env.IMAGE_NAME }}:buildcache,mode=max