update to gitbucket 4.16.0

update to docker 4.15.0

dont delete git it is required bye gitbucket plugins

change gitbucket version

bind data and gist dir

start as non root user

update to gitbucket 4.13

add plugin volume

fix mail address

fix entrypoint script

fix execute bug

handle database config

bind gitbucket not on localhost inside the container

inital commit