CODEWITHSUNDEEP
dockertomcat
bos570
bos570

Reputation: 1523

Serving war file on tomcat docker container

I'm trying to run my java app on a docker container. I'm using a tomcat server locally and it's working fine. I'm new to java/tomcat/docker so there's something I might be very well missing something very simple but I assumed just pointing my local war file to /usr/local/tomcat/webapps would be enough.

Here is my docker-compose.yml

tomcat-dev:
  image: tomcat:8.5.38
  environment:
    - TOMCAT_USERNAME=root
    - TOMCAT_PASSWORD=root
  ports:
    - "8888:8080"
  volumes:
    - /target/npmanager.war:/usr/local/tomcat/webapps/npmanager.war

mysql-dev:
  image: mysql:8.0.2
  environment:
    MYSQL_ROOT_PASSWORD: root
    MYSQL_DATABASE: npmanagercd
  volumes:
    - /mysql-data:/var/lib/mysql
  ports:
    - "3308:3306"

I can see the npmanager.war file in the webapps directory but I can't access my app. My localhost still shows me the tomcat page instead of the "Hello, World" I see when I run it from my local install of tomcat.

Is there something I'm missing about deploying war files on tomcat?

Upvotes: 3

Views: 3543

Answers (1)

bos570
bos570

Reputation: 1523

Okay, so I finally got it working. I wanted to post this answer here if it would help anyone else, but in all honestly I'm not sure I completely understand it.

I had to create a separate Dockerfile for the tomcat image:

FROM tomcat:8.5.38
ADD ./target/npmanager.war /usr/local/tomcat/webapps/
CMD chmod +x /usr/local/tomcat/bin/catalina.sh
CMD ["catalina.sh", "run"]

And then build that image in the docker-compose.yml

version: '3'

services:

tomcat-dev:
  build: .
  environment:
    TOMCAT_USERNAME: root
    TOMCAT_PASSWORD: root
  ports:
    - "8888:8080"

mysql-dev:
  image: mysql:8.0.2
  environment:
    MYSQL_ROOT_PASSWORD: root
    MYSQL_DATABASE: npmanager
  volumes:
    - /mysql-data:/var/lib/mysql
  ports:
    - "3308:3306"

Upvotes: 1

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