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Aaron Po
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# Docker Guide
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This document covers Docker deployment, configuration, and troubleshooting for The
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Biergarten App.
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## Overview
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The project uses Docker Compose to orchestrate multiple services:
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- SQL Server 2022 database
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- Database migrations runner (DbUp)
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- Database seeder
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- .NET API
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- Test runners
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See the [deployment diagram](diagrams/pdf/deployment.pdf) for visual representation.
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## Docker Compose Environments
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### 1. Development (`docker-compose.dev.yaml`)
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**Purpose**: Local development with persistent data
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**Features**:
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- Persistent SQL Server volume
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- Hot reload support
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- Swagger UI enabled
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- Seed data included
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- `CLEAR_DATABASE=true` (drops and recreates schema)
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**Services**:
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```yaml
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sqlserver # SQL Server 2022 (port 1433)
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database.migrations # DbUp migrations
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database.seed # Seed initial data
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api.core # Web API (ports 8080, 8081)
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```
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**Start Development Environment**:
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```bash
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docker compose -f docker-compose.dev.yaml up -d
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```
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**Access**:
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- API Swagger: http://localhost:8080/swagger
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- Health Check: http://localhost:8080/health
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- SQL Server: localhost:1433 (sa credentials from .env.dev)
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**Stop Environment**:
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```bash
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# Stop services (keep volumes)
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docker compose -f docker-compose.dev.yaml down
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# Stop and remove volumes (fresh start)
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docker compose -f docker-compose.dev.yaml down -v
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```
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### 2. Testing (`docker-compose.test.yaml`)
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**Purpose**: Automated CI/CD testing in isolated environment
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**Features**:
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- Fresh database each run
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- All test suites execute in parallel
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- Test results exported to `./test-results/`
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- Containers auto-exit after completion
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- Fully isolated testnet network
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**Services**:
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```yaml
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sqlserver # Test database
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database.migrations # Fresh schema
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database.seed # Test data
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api.specs # Reqnroll BDD tests
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repository.tests # Repository unit tests
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service.auth.tests # Service unit tests
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```
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**Run Tests**:
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```bash
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# Run all tests
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docker compose -f docker-compose.test.yaml up --abort-on-container-exit
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# View results
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ls -la test-results/
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cat test-results/api-specs/results.trx
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cat test-results/repository-tests/results.trx
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cat test-results/service-auth-tests/results.trx
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# Clean up
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docker compose -f docker-compose.test.yaml down -v
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```
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### 3. Production (`docker-compose.prod.yaml`)
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**Purpose**: Production-ready deployment
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**Features**:
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- Production logging levels
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- No database clearing
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- Optimized build configurations
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- Health checks enabled
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- Restart policies (unless-stopped)
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- Security hardening
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**Services**:
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```yaml
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sqlserver # Production SQL Server
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database.migrations # Schema updates only
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api.core # Production API
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```
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**Deploy Production**:
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```bash
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docker compose -f docker-compose.prod.yaml up -d
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```
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## Service Dependencies
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Docker Compose manages startup order using health checks:
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```mermaid
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sqlserver (health check)
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↓
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database.migrations (completes successfully)
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↓
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database.seed (completes successfully)
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↓
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api.core / tests (start when ready)
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```
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**Health Check Example** (SQL Server):
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```yaml
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healthcheck:
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test: ['CMD-SHELL', "sqlcmd -S localhost -U sa -P '${DB_PASSWORD}' -C -Q 'SELECT 1'"]
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interval: 10s
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timeout: 5s
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retries: 12
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start_period: 30s
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```
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**Dependency Configuration**:
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```yaml
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api.core:
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depends_on:
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database.seed:
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condition: service_completed_successfully
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```
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## Volumes
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### Persistent Volumes
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**Development**:
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- `sqlserverdata-dev` - Database files persist between restarts
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- `nuget-cache-dev` - NuGet package cache (speeds up builds)
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**Testing**:
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- `sqlserverdata-test` - Temporary, typically removed after tests
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**Production**:
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- `sqlserverdata-prod` - Production database files
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- `nuget-cache-prod` - Production NuGet cache
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### Mounted Volumes
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**Test Results**:
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```yaml
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volumes:
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- ./test-results:/app/test-results
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```
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Test results are written to host filesystem for CI/CD integration.
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**Code Volumes** (development only):
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```yaml
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volumes:
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- ./src:/app/src # Hot reload for development
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```
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## Networks
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Each environment uses isolated bridge networks:
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- `devnet` - Development network
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- `testnet` - Testing network (fully isolated)
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- `prodnet` - Production network
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## Environment Variables
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All containers are configured via environment variables from `.env` files:
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```yaml
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env_file: '.env.dev' # or .env.test, .env.prod
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environment:
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ASPNETCORE_ENVIRONMENT: 'Development'
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DOTNET_RUNNING_IN_CONTAINER: 'true'
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DB_SERVER: '${DB_SERVER}'
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DB_NAME: '${DB_NAME}'
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DB_USER: '${DB_USER}'
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DB_PASSWORD: '${DB_PASSWORD}'
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JWT_SECRET: '${JWT_SECRET}'
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```
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For complete list, see [Environment Variables](environment-variables.md).
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## Common Commands
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### View Services
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```bash
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# Running services
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docker compose -f docker-compose.dev.yaml ps
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# All containers (including stopped)
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docker ps -a
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```
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### View Logs
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```bash
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# All services
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docker compose -f docker-compose.dev.yaml logs -f
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# Specific service
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docker compose -f docker-compose.dev.yaml logs -f api.core
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# Last 100 lines
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docker compose -f docker-compose.dev.yaml logs --tail=100 api.core
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```
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### Execute Commands in Container
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```bash
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# Interactive shell
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docker exec -it dev-env-api-core bash
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# Run command
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docker exec dev-env-sqlserver /opt/mssql-tools18/bin/sqlcmd -S localhost -U sa -P 'password' -C
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```
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### Restart Services
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```bash
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# Restart all services
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docker compose -f docker-compose.dev.yaml restart
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# Restart specific service
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docker compose -f docker-compose.dev.yaml restart api.core
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# Rebuild and restart
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docker compose -f docker-compose.dev.yaml up -d --build api.core
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```
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### Build Images
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```bash
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# Build all images
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docker compose -f docker-compose.dev.yaml build
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# Build specific service
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docker compose -f docker-compose.dev.yaml build api.core
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# Build without cache
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docker compose -f docker-compose.dev.yaml build --no-cache
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```
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### Clean Up
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```bash
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# Stop and remove containers
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docker compose -f docker-compose.dev.yaml down
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# Remove containers and volumes
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docker compose -f docker-compose.dev.yaml down -v
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# Remove containers, volumes, and images
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docker compose -f docker-compose.dev.yaml down -v --rmi all
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# System-wide cleanup
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docker system prune -af --volumes
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```
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## Dockerfile Structure
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### Multi-Stage Build
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```dockerfile
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# Stage 1: Build
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FROM mcr.microsoft.com/dotnet/sdk:10.0 AS build
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WORKDIR /src
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COPY ["Project/Project.csproj", "Project/"]
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RUN dotnet restore
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COPY . .
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RUN dotnet build -c Release
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# Stage 2: Runtime
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FROM mcr.microsoft.com/dotnet/aspnet:10.0 AS final
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WORKDIR /app
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COPY --from=build /app/build .
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ENTRYPOINT ["dotnet", "Project.dll"]
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```
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## Additional Resources
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- [Docker Compose Documentation](https://docs.docker.com/compose/)
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- [.NET Docker Images](https://hub.docker.com/_/microsoft-dotnet)
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- [SQL Server Docker Images](https://hub.docker.com/_/microsoft-mssql-server)
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