ci: add gitea ci/cd pipeline

.gitea/workflows/code-quality.yml

@@ -0,0 +1,75 @@
+name: Code Quality
+
+on:
+  push:
+    branches: ["main"]
+  pull_request:
+    branches: ["main"]
+
+jobs:
+  code-quality:
+    runs-on: ubuntu-latest
+    name: Code Quality (Elixir ${{matrix.elixir}} OTP ${{matrix.otp}})
+    strategy:
+      matrix:
+        otp: ['26.0']
+        elixir: ['1.15']
+
+    services:
+      db:
+        image: postgres:15
+        ports: ['5432:5432']
+        env:
+          POSTGRES_PASSWORD: postgres
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+
+    - name: Set up Elixir
+      uses: erlef/setup-beam@v1
+      with:
+        elixir-version: ${{matrix.elixir}}
+        otp-version: ${{matrix.otp}}
+
+    - name: Restore dependencies cache
+      uses: actions/cache@v4
+      with:
+        path: deps
+        key: ${{ runner.os }}-mix-${{ hashFiles('**/mix.lock') }}
+        restore-keys: ${{ runner.os }}-mix-
+
+    - name: Restore compiled code cache
+      uses: actions/cache@v4
+      with:
+        path: _build
+        key: ${{ runner.os }}-build-${{ matrix.otp }}-${{ matrix.elixir }}-${{ hashFiles('**/mix.lock') }}
+        restore-keys: |
+          ${{ runner.os }}-build-${{ matrix.otp }}-${{ matrix.elixir }}-
+
+    - name: Install dependencies
+      run: mix deps.get
+
+    - name: Check for unused dependencies
+      run: mix deps.unlock --check-unused
+
+    - name: Compile with warnings as errors
+      run: mix compile --warnings-as-errors
+
+    - name: Check code formatting
+      run: mix format --check-formatted
+
+    - name: Run tests
+      run: mix test
+      env:
+        POSTGRES_PASSWORD: postgres
+
+    - name: Run precommit (should pass if all above passed)
+      run: mix precommit
+      env:
+        POSTGRES_PASSWORD: postgres