$ npm i -g 'r2g.docker'

or just install:

 $ npm i -g 'r2g'

and r2g will install r2g.docker for you. Note that r2g docker is the same as running dkr2g exec.

Create the files in your project that are necessary for using .r2g to the fullest:

 $ dkr2g init    # the same as `$ r2g init`

 $ dkr2g exec    # the same as `$ r2g docker`

By default, dkr2g uses a non-root user for the container, to use the root user, use the --root option:

dkr2g exec --root

dkr2g exec --full --pack

If --full is used, then we install local dependencies, instead of pulling those dependencies from NPM.
This is very useful if you need to test a locally developed dependency tree.

The --pack option only applies when --full is used.
If --pack is used, then dkr2g will use npm pack against local dependencies, which converts them to
their published format.

dkr2g exec --node-version='9.5' --npm-version='5.4'

If --node-version is used, the Docker container will use that Node version. --nodev is an alias for --node-version.
If --npm-version is used, the Docker container will use that NPM version. --npmv is an alias for --npm-version.