Docker组成了从容器到本地主机的映射端口

Question

I am trying to map the port of the db-container to my containers localhost:port. Is there a way to map these ports? (I want to reach the db inside wildfly on localhost at port 12345)

currently, my db is only under oracle:1521 reachable. but I want it to be reachable under localhost:12345.

version: '3.5'
services:
  wildfly:
    image: wildfly:latest
    ports:
    - "32004:32004"
    depends_on:
    - oracle
    links:
    - oracle
  oracle:
    image: oracle-db:latest
    expose:
    - "1521"
    healthcheck:
      test: ["CMD", "curl", "-f", "http://localhost:1521"]
      interval: 2m
      timeout: 10s
      retries: 5

Answer 1

Sure, map exposed container port 1521 to host port 12345 with

ports:
    - "12345:1521"

for your oracle service like you do in the wildfly service. The pattern is HOST_PORT:EXPOSED_CONTAINER_PORT .