Add flake8 to Dockerfile

6 jobs for develop in 22 minutes and 16 seconds (queued for 47 seconds)
Status Job ID Name Coverage
  Prepare
passed #920113
shell
prepare:docker

00:00:42

passed #920100
shell
prepare:docker

00:00:40

 
  Build
passed #920101
docker
build:docs

00:00:23

 
  Test
passed #920102
docker
test:flake8

00:00:09

passed #920103
docker
test:pytest

00:20:46

97.0%
 
  Deploy
passed #920104
shell
deploy:docker:dev

00:00:15