Docker Apache Tomcat 2020
bogotobogo.com site search:
Sample war file
Let's download a sample war file from https://tomcat.apache.org/tomcat-8.0-doc/appdev/sample/.
As the document recommends, we may want to put it into CATALINA_BASE/webapps directory.
$ docker run -it --rm -p 8787:8080 \ -v /Users/kihyuckhong/Documents/Docker/Tomcat/sample.war:/usr/local/tomcat/webapps/sample.war \ tomcat ... Status: Downloaded newer image for tomcat:latest Using CATALINA_BASE: /usr/local/tomcat Using CATALINA_HOME: /usr/local/tomcat Using CATALINA_TMPDIR: /usr/local/tomcat/temp Using JRE_HOME: /docker-java-home/jre Using CLASSPATH: /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar ...
Note that we mapped the host port (8787) to the Tomcat container port (8080) and mounte a volume from the host to the container via the -v flag. By using volumes, changing the local code will affect the container and it'll have updated code.
-p $HOSTPORT:$CONTAINERPORT
Using Dockerfile
We get the same result if we use Dockerfile like this which runs "catalina.sh":
FROM tomcat:8.5.35-jre10 ADD sample.war /usr/local/tomcat/webapps/ EXPOSE 8080 CMD chmod +x /usr/local/tomcat/bin/catalina.sh CMD ["catalina.sh", "run"]
$ docker build -t bogo_tomcat . $ docker run -it -p 8787:8080 bogo_tomcat
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