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STEPBYSTEP.md

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Step by step guide

You can build this architecture step by step, so as to better understand it. The solutions can be found in the stepx repositories.

Step 1

(Refer to the step1 repository.)

We want to deploy a simple helloworld application. We need java to be installed and the tomcat servlet to run.

For the sake of simplicity, let us do it in a single container. It loads the binaries, copies the helloworld.war archive in the tomcat-bin/webapps repository and starts tomcat.

docker build -t step1 .
docker run -dP step1

Step 2

(Refer to the step2 repository.)

The goal is the same as in step 1, except that we build 3 containers:

  • the java binaries
  • the tomcat binaries
  • the processes
docker build -t step2java java
docker run --name javabin step2java
docker build -t step2tomcat tomcat
docker run --name tomcatbin step2tomcat
docker build -t step2process process
docker run -dP --volumes-from=javabin --volumes-from=tomcatbin step2process

Step 3

(Refer to the step3 repository.)

Exactly the same as step 2, but we use docker-compose which saves us many commands.

docker-compose up -d

Step 4

(Refer to the step4 repository.)

The eclipse IDE is added to our setup. It will be split into 2 containers:

  • the eclipse data, containing the helloworld project
  • the eclipse process, which also contains the java and tomcat processes

Depending on wether you use linux or not, use either the docker-compose-linux.yml or the docker-compose-otheros.yml file.

docker-compose -f docker-compose-linux.yml up -d
  • Select /home/javadev/workspace as a workspace
  • Add an Apache Tomcat v8.0 Server named localhost
  • Its installation directory is /tomcat-bin
  • The JRE is java-bin
  • Select the server and import an existing Maven Project, with the root directory /workspace/helloworld
  • Add the helloworld project to the server
  • Restart the server

On MacOS, you have to launch a vnc client on port 5900. Please have a look at the 'Quickstart on MacOS' section in the readme.