Docker add warfile to official Tomcat image

Building on @daniel's answer, if you want to deploy your WAR to the root of tomcat, I did this:

FROM tomcat:7-jre7
MAINTAINER xyz

RUN ["rm", "-fr", "/usr/local/tomcat/webapps/ROOT"]
COPY ./target/your-webapp-1.0-SNAPSHOT.war /usr/local/tomcat/webapps/ROOT.war

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

It deletes the existing root webapp, copies your WAR to the ROOT.war filename then executes tomcat.

Reading from the documentation of the repo you would do something like that

FROM tomcat
MAINTAINER xyz

ADD your.war /usr/local/tomcat/webapps/

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

Then build your image with docker build -t yourName <path-to-dockerfile>

And run it with:

docker run --rm -it -p 8080:8080 yourName

• --rm removes the container as soon as you stop it
• -p forwards the port to your host (or if you use boot2docker to this IP)
• -it allows interactive mode, so you see if something get's deployed

docker run -it --rm --name MYTOMCAT -p 8080:8080 -v .../wars:/usr/local/tomcat/webapps/ tomcat:8.0

where wars folder contains war to deploy