browser: avoid 404 errors during install

Given the openssh image already runs an apt-get update and, at this time,
I'm building this image shortly after that one, I don't see why I'm getting
a 404 error at all.

Signed-off-by: Paul Campbell <pcampbell@kemitix.net>
openssh-x11-jdk: depends on browser

Signed-off-by: Paul Campbell <pcampbell@kemitix.net>
insert-to-my-data: helper to add files to the my-data container

File must be a plain tar file. Not compressed.

Signed-off-by: Paul Campbell <pcampbell@kemitix.net>