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A docker image/container to run NodeJS apps.
The node version is specified and ran with nvm.

Check the automatic build in the Docker's official registry

Node.js versions supported: 0.12.2, 0.12.3, 0.12.4, 0.12.5, 0.12.6, 0.12.7, 4.0.0, 4.1.0, 4.1.1, 4.1.2, 4.2.0, 4.2.1,
4.2.2, 4.2.3, 5.0.0, 5.1.0, 5.1.1, 6.3.1, 6.5.0, 6.6.0, 6.9.1

I am using this image to run my own node apps. I am going to update it when a new node version is out and also
when I need more or different tools installed.

The ready made image can be used that way:

docker run ... iliyan/docker-node-nvm:NODE_VERSION

First check if the NODE_VERSION tag exists in the repo. The tag will always be the same as the NodeJS version
installed by the code tagged. Sometimes I need to add new features which can be seen only on latest commits on
the master branch and they will be available in the next tag. That means if you see a feature that is missing in the
tag you use it definitely is in the latest commits. The easiest way to use the latest is to just run the container
without specifying a tag:

docker pull iliyan/docker-node-nvm
docker run ... iliyan/docker-node-nvm

Currently it uses pm2 to run the app.

You can run the container once to do some job or continuously for a whole application.

The container needs a volume on /myapp and by default the command is looking for the main app file at /myapp/src/app.js:

docker run ... -v /home/yourusername/yournodeapp:/myapp

If your app has a different structure you can specify the main js file like this(full path can be used too):

#server.js is in yournodeapp/
docker run ... -e 'APP_MAIN=server.js'
#or with a full path which is the same as the previous command:
docker run ... -e 'APP_MAIN=/myapp/server.js'

You will probably need to set a time zone in which the node server will run. This can be done with the TIME_ZONE
env variable:

docker run ... -e 'TIME_ZONE=Europe/Berlin'

You can also assign an UID to execute the node application with a specific user that exists on the host machine:

docker run ... -u 1000

The volume yournodeapp/ dir will be automatically owned by the internal node user (respectfully the external -u user)
on container's start.

Cpu and memory limit can be specified while executing docker run:

docker run ... -m 512m -c 512

A typical docker run command should look like this:

docker run -d --name mynodeapp -v /yourusername/yournodeapp:/myapp/ -e 'APP_MAIN=server.js' -e 'TIME_ZONE=Europe/Berlin' -p HOSTIP:HOSTPORT:APPPORT -u 1000 iliyan/docker-node-nvm:NODE_VERSION

If you check in the Dockerfile you will see that a new user node is created and used to install all the required files
and run the application. The same user is also given some limited sudo permissions to run additional commands.

There is an example build shell script here.
It can be used as a template to build your own image from the Dockerfile.
Don't forget to set the proper tag there.

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