MAINTAINER <name>
The MAINTAINER instruction allows you to set the Author field of the generated images.
DO NOT USE THE MAINTAINER DIRECTIVE
According to Official Docker Documentation the MAINTAINER instruction is deprecated. Instead, one should use the LABEL instruction to define the author of the generated images. The LABEL instruction is more flexible, enables setting metadata, and can be easily viewed with the command docker inspect.
LABEL maintainer="[email protected]"