add requirements for python Flask

3 jobs for master in 9 minutes and 51 seconds (queued for 3 seconds)
Name Stage Failure
failed
test Test
$ if [ -z ${KUBERNETES_PORT+x} ]; then # collapsed multi-line command
$ export DATABASE_URL="postgres://${POSTGRES_USER}:${POSTGRES_PASSWORD}@${DB_HOST}:5432/${POSTGRES_DB}"
$ cp -R . /tmp/app
$ /bin/herokuish buildpack test
-----> Python app detected
Selected buildpack does not support test feature
Running after_script
Uploading artifacts for failed job
ERROR: Job failed: exit code 1
failed
build Build
Downloading artifacts
Running before_script and script
$ if [[ -z "$CI_COMMIT_TAG" ]]; then # collapsed multi-line command
$ /build/build.sh
Logging to GitLab Container Registry with CI credentials...
error during connect: Post http://docker:2375/v1.40/auth: dial tcp: lookup docker on 134.158.69.191:53: no such host
Running after_script
Uploading artifacts for failed job
ERROR: Job failed: exit code 1