5. Compose for a .NET API + SQL Server + Redis

# compose.yaml
services:
  api:
    build:
      context: .
      dockerfile: src/Shop.Api/Dockerfile
    ports:
      - "8080:8080"
    environment:
      ASPNETCORE_ENVIRONMENT: Development
      ConnectionStrings__Db: "Server=sql;Database=Shop;User Id=sa;Password=${SA_PASSWORD};TrustServerCertificate=True"
      ConnectionStrings__Redis: "redis:6379"
    depends_on:
      sql:
        condition: service_healthy
      redis:
        condition: service_started
  sql:
    image: mcr.microsoft.com/mssql/server:2022-latest
    environment:
      ACCEPT_EULA: "Y"
      MSSQL_SA_PASSWORD: ${SA_PASSWORD}
    volumes:
      - sqldata:/var/opt/mssql
    healthcheck:
      test: ["CMD-SHELL", "/opt/mssql-tools18/bin/sqlcmd -S localhost -U sa -P \"$$MSSQL_SA_PASSWORD\" -C -Q 'SELECT 1' || exit 1"]
      interval: 10s
      retries: 10
  redis:
    image: redis:7-alpine
volumes:
  sqldata:

docker compose up -d --build      # build + start everything
docker compose ps
docker compose logs -f api
docker compose exec api sh
docker compose down               # stop and remove containers + network (add -v to delete volumes)