ci: add CI workflow for PRs and main branch

.github/workflows/ci.yml

@@ -0,0 +1,151 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - master
+      - main
+  pull_request:
+    branches:
+      - master
+      - main
+
+env:
+  MIX_ENV: test
+  OTP_VERSION: "27.3.4.6"
+  ELIXIR_VERSION: "1.19.4"
+
+jobs:
+  compile:
+    name: Compile
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Elixir
+        uses: erlef/setup-beam@v1
+        with:
+          otp-version: ${{ env.OTP_VERSION }}
+          elixir-version: ${{ env.ELIXIR_VERSION }}
+
+      - name: Cache deps
+        uses: actions/cache@v4
+        with:
+          path: deps
+          key: ${{ runner.os }}-mix-${{ hashFiles('**/mix.lock') }}
+          restore-keys: ${{ runner.os }}-mix-
+
+      - name: Cache _build
+        uses: actions/cache@v4
+        with:
+          path: _build
+          key: ${{ runner.os }}-build-${{ hashFiles('**/mix.lock') }}
+          restore-keys: ${{ runner.os }}-build-
+
+      - name: Install dependencies
+        run: mix deps.get
+
+      - name: Compile
+        run: mix compile --warnings-as-errors
+
+  format:
+    name: Format
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Elixir
+        uses: erlef/setup-beam@v1
+        with:
+          otp-version: ${{ env.OTP_VERSION }}
+          elixir-version: ${{ env.ELIXIR_VERSION }}
+
+      - name: Check formatting
+        run: mix format --check-formatted
+
+  credo:
+    name: Credo
+    runs-on: ubuntu-latest
+    needs: compile
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Elixir
+        uses: erlef/setup-beam@v1
+        with:
+          otp-version: ${{ env.OTP_VERSION }}
+          elixir-version: ${{ env.ELIXIR_VERSION }}
+
+      - name: Cache deps
+        uses: actions/cache@v4
+        with:
+          path: deps
+          key: ${{ runner.os }}-mix-${{ hashFiles('**/mix.lock') }}
+          restore-keys: ${{ runner.os }}-mix-
+
+      - name: Cache _build
+        uses: actions/cache@v4
+        with:
+          path: _build
+          key: ${{ runner.os }}-build-${{ hashFiles('**/mix.lock') }}
+          restore-keys: ${{ runner.os }}-build-
+
+      - name: Install dependencies
+        run: mix deps.get
+
+      - name: Run Credo
+        run: mix credo --strict
+
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    needs: compile
+    services:
+      postgres:
+        image: postgres:15
+        env:
+          POSTGRES_USER: postgres
+          POSTGRES_PASSWORD: postgres
+          POSTGRES_DB: explorer_test
+        ports:
+          - 5432:5432
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+
+    env:
+      DATABASE_URL: postgresql://postgres:postgres@localhost:5432/explorer_test
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Elixir
+        uses: erlef/setup-beam@v1
+        with:
+          otp-version: ${{ env.OTP_VERSION }}
+          elixir-version: ${{ env.ELIXIR_VERSION }}
+
+      - name: Cache deps
+        uses: actions/cache@v4
+        with:
+          path: deps
+          key: ${{ runner.os }}-mix-${{ hashFiles('**/mix.lock') }}
+          restore-keys: ${{ runner.os }}-mix-
+
+      - name: Cache _build
+        uses: actions/cache@v4
+        with:
+          path: _build
+          key: ${{ runner.os }}-build-${{ hashFiles('**/mix.lock') }}
+          restore-keys: ${{ runner.os }}-build-
+
+      - name: Install dependencies
+        run: mix deps.get
+
+      - name: Setup database
+        run: mix ecto.create && mix ecto.migrate
+
+      - name: Run tests
+        run: mix test