Desenvolvimento web em JSP com Docker + PostgreSQL + Tomcat

docker-compose.yml

version: '3.5'

services:
  postgres:
    container_name: postgres
    image: postgres
    environment:
      POSTGRES_USER: ${POSTGRES_USER:-postgres}
      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-postgres}
      PGDATA: /data/postgres
    volumes:
       - postgres:/data/postgres
    ports:
      - "5432:5432"
    restart: unless-stopped
  
  pgadmin:
    container_name: pgadmin
    image: dpage/pgadmin4
    environment:
      PGADMIN_DEFAULT_EMAIL: ${PGADMIN_DEFAULT_EMAIL:[email protected]}
      PGADMIN_DEFAULT_PASSWORD: ${PGADMIN_DEFAULT_PASSWORD:-admin}
    volumes:
       - pgadmin:/root/.pgadmin
    ports:
      - "${PGADMIN_PORT:-5050}:80"
    restart: unless-stopped

  tomcat:
    build: .
    container_name: projeto-um
    volumes:
       - ./build/web:/usr/local/tomcat/webapps/<YOUR_PROJECT_FOLDER>
    entrypoint: "catalina.sh run"
    ports:
      - "8888:8080"
    links:
      - postgres
    depends_on:
      - postgres

volumes:
    postgres:
    pgadmin:

Dockerfile

FROM tomcat:9.0.1-jre8-alpine

COPY ./build/web /usr/local/tomcat/webapps/<YOUR_PROJECT_FOLDER>

CMD ["catalina.sh", "run"]