Add GitLab CI configuration

3 jobs for gitlab-ci in 2 minutes and 27 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #1126
docker linux amd64
build_job

00:01:04

 
  Test
passed #1128
docker linux amd64
deckard_job

00:00:57

passed #1127
docker linux amd64
test_job

00:00:25