updated Dockerfile golang version

updated go version in releaser.yaml

updated releaser.yaml

added the support for --user and --group options and automatically in…

…structs fpm to run as root when if needed

Merge pull request #4 from alash3al/addon/fpm-user-group

added www-data as default user and group

added Dockerfile

Merge pull request #3 from alash3al/v3

V3

updated the docs