Merge branch 'update/slim' into 'master'

Slim down Debian images

See merge request !13
13 jobs for master in 5 minutes and 6 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Test
passed #2922
lint-dockerfile

00:01:21

passed #2923
lint-shell-script

00:01:15

 
  Deploy
passed #2925
manual
build-debian-buster-build-master

00:02:13

passed #2927
manual
build-debian-jessie-build-master

00:03:41

passed #2926
manual
build-debian-stretch-build-master

00:02:24

passed #2928
manual
build-debian-wp-org-deploy-build-master

00:02:36

manual #2924
allowed to fail manual
build-golang-master
manual #2934
allowed to fail manual
build-php-5.3-master
manual #2933
allowed to fail manual
build-php-5.6-master
manual #2932
allowed to fail manual
build-php-7.0-master
manual #2931
allowed to fail manual
build-php-7.1-master
manual #2930
allowed to fail manual
build-php-7.2-master
manual #2929
allowed to fail manual
build-php-7.3-master