For example, the two MineTest Servers will be named ‘mtserver1’ and ‘mtserver2’. The name given to each ‘service’ or container is the name of that container. The network is 172.17.0.1 and the first container should be 172.17.0.2. For example, to open ‘mtserver1’ interactively the command would be ‘docker run -it compose_mtserver1 bash’.Īll containers started from compose will share an internal network. When the image is named it must be preceded by ‘compose_’. Because the command is only ‘docker’ it does not have immediate access to the ‘compose’ images. Notice the command itself is not ‘docker-compose’ but ‘docker’. The command is useful if you wish to enter the container in interactive mode.

Once these changes have all been saved you can open a Terminal in the folder ‘~/Docker/compose-mtest/compose’.Īt the command prompt enter the following command: Since each MineTest server will be receiving connections internally on Port 30,000 there is no need to change the ‘nf’ file. Port mappings are specified in the ‘docker-compose.yml’ file and not from the command line. NOTE: It is imperative that multiple services do not use the same Port mapping or an error is generated. The Port mapping allows ‘mtserver1’ to be accessed on Port 30,000 from the the network and ‘mtserver2’ from Port 30,001. The Port mapping for ‘mtserver2’ sets an input for Port 30,001 and an output of 30,000. The Port mapping for ‘mtserver1’ is 30,000 for input and 30,0000 for output using UDP. Lines 5 and 10 show we are creating a Port mapping. On the ‘build’ lines the ‘dockerfile’ location is specified for each service. The service names match the folder names, but this is not necessary. Looking at lines 3 and 8 we are creating two services named ‘mtserver1’ and ‘mtserver2’. The second line shows we are going to create services. The first line specifies we are using Docker-Compose version 3. Make sure you stick to proper indentation or errors can occur. Keep indentations the same throughout the ‘yml’ file.

You can change these as needed, but the location must be changed later in the ‘docker-compose.yml’ file:īuild: /home/jarret/Docker/compose-mtest/mtserver1/.īuild: /home/jarret/Docker/compose-mtest/mtserver2/. They will be exactly the same except one server will use Port 30,000 and the other Port 30,001.įirst, we can create a folder structure to work with for this example. In my first example I am creating two MineTest servers. If you should build multiple containers which are very similar or the same then the build time will be less since sections will be cached and re-used. In the examples used in this article I will limit the number of containers to two, but more containers can be created. The containers must run on a single Terminal at once. When running multiple containers in a group it is mandatory that the containers are non-interactive. Multiple containers can be created at one time with one command. It can occur that you may want to create multiple containers at once. With Docker you can create containers and get other systems to interact with the containers.

Minetest commands