refactor: use GitHub Actions services instead of docker compose for DB setup

- Replace docker compose with native GitHub Actions services for PostgreSQL and MySQL
- Use direct docker run for MSSQL (services not easily available)
- Update README to show GitHub Actions services approach
- Simplify workflow configuration and improve CI reliability

Author: gfx

.github/workflows/example.yaml

@@ -11,31 +11,27 @@ jobs:
   postgresql-preview:
     runs-on: ubuntu-latest
 
+    services:
+      postgres:
+        image: postgres:17
+        env:
+          POSTGRES_USER: postgres
+          POSTGRES_PASSWORD: postgres
+          POSTGRES_DB: testdb
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+        ports:
+          - 5432:5432
+
     steps:
       - name: Checkout code
         uses: actions/checkout@v5
         with:
           fetch-depth: 0
 
-      - name: Start PostgreSQL with Docker Compose
-        run: |
-          docker compose up -d postgres
-        env:
-          POSTGRES_VERSION: 17
-
-      - name: Wait for PostgreSQL
-        run: |
-          for i in {1..30}; do
-            if docker exec $(docker compose ps -q postgres) pg_isready -U postgres >/dev/null 2>&1; then
-              echo "PostgreSQL is ready"
-              break
-            fi
-            echo "Waiting for PostgreSQL..."
-            sleep 2
-          done
-          # Create the test database
-          docker exec $(docker compose ps -q postgres) psql -U postgres -c "CREATE DATABASE testdb;"
-
       - name: Preview PostgreSQL schema changes
         uses: ./
         with:
@@ -44,57 +40,34 @@ jobs:
           baseline-schema-file: examples/psqldef-current.sql
           schema-file: examples/psqldef-desired.sql
           pg-user: postgres
-          pg-password: ''
+          pg-password: postgres
           pg-host: localhost
           pg-port: 5432
           pg-database: testdb
 
-      - name: Stop PostgreSQL
-        if: always()
-        run: docker compose down postgres
-
   mysql-preview:
     runs-on: ubuntu-latest
 
+    services:
+      mysql:
+        image: mysql:8.0
+        env:
+          MYSQL_ROOT_PASSWORD: testpass
+          MYSQL_DATABASE: testdb
+        options: >-
+          --health-cmd "mysqladmin ping -h localhost -u root -ptestpass"
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 10
+        ports:
+          - 3306:3306
+
     steps:
       - name: Checkout code
         uses: actions/checkout@v5
         with:
           fetch-depth: 0
 
-      - name: Start MySQL with Docker Compose
-        run: |
-          docker compose up -d mysql
-        env:
-          MYSQL_VERSION: 8.0
-
-      - name: Wait for MySQL
-        run: |
-          # Wait for MySQL to be ready inside container
-          for i in {1..30}; do
-            if docker exec $(docker compose ps -q mysql) mysql -uroot -ptestpass -e "SELECT 1" >/dev/null 2>&1; then
-              echo "MySQL is ready inside container"
-              break
-            fi
-            echo "Waiting for MySQL..."
-            sleep 2
-          done
-
-          # Give MySQL more time to accept external connections
-          echo "Waiting for MySQL to accept external connections..."
-          sleep 5
-
-          # Create the test database
-          docker exec $(docker compose ps -q mysql) mysql -uroot -ptestpass -e "CREATE DATABASE testdb;"
-
-          # Debug: Check MySQL status and users
-          echo "Checking MySQL users and permissions..."
-          docker exec $(docker compose ps -q mysql) mysql -uroot -ptestpass -e "SELECT user, host FROM mysql.user WHERE user='root';"
-
-          # Test connection from host
-          echo "Testing connection from host..."
-          mysql -h 127.0.0.1 -P 3306 -u root -ptestpass -e "SHOW DATABASES;" || echo "Note: Direct MySQL client connection failed"
-
       - name: Preview MySQL schema changes
         uses: ./
         with:
@@ -103,15 +76,11 @@ jobs:
           baseline-schema-file: examples/mysqldef-current.sql
           schema-file: examples/mysqldef-desired.sql
           mysql-user: root
-          mysql-password: 'testpass'
+          mysql-password: testpass
           mysql-host: 127.0.0.1
           mysql-port: 3306
           mysql-database: testdb
 
-      - name: Stop MySQL
-        if: always()
-        run: docker compose down mysql
-
   sqlite-preview:
     runs-on: ubuntu-latest
 
@@ -139,11 +108,14 @@ jobs:
         with:
           fetch-depth: 0
 
-      - name: Start MSSQL with Docker Compose
+      - name: Start MSSQL
         run: |
-          docker compose up -d mssql
-        env:
-          MSSQL_VERSION: 2022-latest
+          docker run -d \
+            --name mssql \
+            -e "ACCEPT_EULA=Y" \
+            -e "SA_PASSWORD=Passw0rd" \
+            -p 1433:1433 \
+            mcr.microsoft.com/mssql/server:2022-latest
 
       - name: Wait for MSSQL
         run: |
@@ -156,18 +128,16 @@ jobs:
 
           # Wait for MSSQL to be ready
           for i in {1..60}; do
-            # Try both old and new sqlcmd paths for compatibility
-            if docker exec $(docker compose ps -q mssql) /opt/mssql-tools18/bin/sqlcmd -S localhost -U SA -P "Passw0rd" -Q "SELECT 1" -C >/dev/null 2>&1 || \
-               docker exec $(docker compose ps -q mssql) /opt/mssql-tools/bin/sqlcmd -S localhost -U SA -P "Passw0rd" -Q "SELECT 1" >/dev/null 2>&1; then
+            if /opt/mssql-tools18/bin/sqlcmd -S localhost -U SA -P "Passw0rd" -Q "SELECT 1" -C >/dev/null 2>&1; then
               echo "MSSQL is ready"
               break
             fi
             echo "Waiting for MSSQL..."
             sleep 3
           done
-          # Create the test database (try both paths)
-          docker exec $(docker compose ps -q mssql) /opt/mssql-tools18/bin/sqlcmd -S localhost -U SA -P "Passw0rd" -Q "CREATE DATABASE testdb;" -C || \
-          docker exec $(docker compose ps -q mssql) /opt/mssql-tools/bin/sqlcmd -S localhost -U SA -P "Passw0rd" -Q "CREATE DATABASE testdb;"
+
+          # Create the test database
+          /opt/mssql-tools18/bin/sqlcmd -S localhost -U SA -P "Passw0rd" -Q "CREATE DATABASE testdb;" -C
 
       - name: Preview MSSQL schema changes
         uses: ./
@@ -184,4 +154,4 @@ jobs:
 
       - name: Stop MSSQL
         if: always()
-        run: docker compose down mssql
+        run: docker stop mssql && docker rm mssql

README.md

@@ -172,33 +172,41 @@ You can use sqldef configuration files for additional settings:
     # ... database connection parameters
 ```
 
-### Using with Docker Compose
+### Using with GitHub Actions Services
 
-For complex database setups, combine with Docker Compose:
+For database setups, use GitHub Actions services for better integration:
 
 ```yaml
-steps:
-  - uses: actions/checkout@v5
-    with:
-      fetch-depth: 0
-
-  - name: Start database services
-    run: docker-compose up -d
-
-  - name: Wait for database
-    run: |
-      for i in {1..30}; do
-        if docker exec postgres pg_isready; then
-          break
-        fi
-        sleep 2
-      done
-
-  - uses: gfx/sqldef-preview-action@v1
-    with:
-      command: psqldef
-      schema-file: schema/database.sql
-      # ... connection parameters
+jobs:
+  preview-schema:
+    runs-on: ubuntu-latest
+
+    services:
+      postgres:
+        image: postgres:15
+        env:
+          POSTGRES_PASSWORD: postgres
+          POSTGRES_DB: testdb
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+        ports:
+          - 5432:5432
+
+    steps:
+      - uses: actions/checkout@v5
+        with:
+          fetch-depth: 0
+
+      - uses: gfx/sqldef-preview-action@v1
+        with:
+          command: psqldef
+          schema-file: schema/database.sql
+          pg-user: postgres
+          pg-password: postgres
+          pg-database: testdb
 ```
 
 ## Example PR Comment