Docker 容器化技能包

Dockerfile 最佳实践

Java Spring Boot 应用

多阶段构建

FROM maven:3.8-openjdk-17 AS build WORKDIR /app COPY pom.xml . RUN mvn dependency:go-offline COPY src ./src RUN mvn clean package -DskipTests

FROM openjdk:17-jdk-slim WORKDIR /app COPY --from=build /app/target/*.jar app.jar EXPOSE 8080 ENTRYPOINT ["java", "-jar", "app.jar"]

Docker Compose

version: '3.8' services: app: build: . ports: - "8080:8080" environment: - SPRING_PROFILES_ACTIVE=prod depends_on: - mysql

mysql: image: mysql:8.0 environment: - MYSQL_ROOT_PASSWORD=password volumes: - mysql_data:/var/lib/mysql

volumes: mysql_data:

常用命令

构建镜像

docker build -t myapp:latest .

运行容器

docker run -d -p 8080:8080 myapp:latest

查看日志

docker logs -f container_id

进入容器

docker exec -it container_id /bin/bash