Add HPLIP

[mburn0403]

would it be possible to add the HPLIP Package to the container?

# apk add cups cups-libs cups-pdf cups-client cups-filters hplip

[thoschworks]

I don't know any reason why this shouldn't be possible.

Some remarks:

• The images is based on Ubuntu. apk is not used on Ubuntu. You need to use aptor apt-get (see line line 12 of the Dockerfile).
• cups is already included (see line 14)
• cups depends on cups-client and cups-filters, so it is already included
• cups-pdf is already included (see line 15)
• cups-libs does not exist on Debian/Ubuntu, I think your code-fragment comes from Alpine Linux

Just add hplip \ in a new line before line 18 and change line 1 to FROM ubuntu:bionic (or newer), because zesty is not supported anymore.