added edge main repo to fix rabbitmq-c dep for php7-amqp

Merge pull request wallabag#48 from xsteadfastx/version-2.2.1

Version bumb to 2.2.1 and added migrate command

Merge pull request wallabag#46 from wallabag/dockerfile-216

Update Dockerfile for wallabag 2.1.6

Merge pull request wallabag#31 from wallabag/docker-214

Dockerfile for 2.1.4

fixed location of php configuration to /etc/php7

added test for default configuration

Merge pull request wallabag#21 from xsteadfastx/master

2.1.1 image

Merge pull request wallabag#17 from wallabag/wllbg-208

wallabag 2.0.8

Update Dockerfile for 2.0.7 release

Merge pull request wallabag#13 from nsteinmetz/patch-1

Update Dockerfile for 2.0.6 release