Merge branch '33-django-3.1' into 'master'

Update Django base from 3.0 to 3.1

Closes #33

See merge request tnir/docs.djangoproject.jp!30

Merge branch '30-use-go-1-13-ga' into 'master'

Use Go 1.13 (GA)

Closes #30

See merge request tnir/docs.djangoproject.jp!28

Merge branch '32-update-google-cloud-sdk-to-297-0-1' into 'master'

Update Google Cloud SDK to 297.0.1

Closes #32

See merge request tnir/docs.djangoproject.jp!27

Merge branch '29-golang-1.12' into 'master'

Rewrite main func for go111 runtime

Closes #29

See merge request tnir/docs.djangoproject.jp!24

Merge branch '28-golang-1.12-on-tests' into 'master'

Update Go from 1.11 to 1.12 on Alpine 3.10

Closes #28

See merge request tnir/docs.djangoproject.jp!23

Merge branch '21-use-go-1.12' into 'master'

Update Go from 1.11 to 1.12 (beta)

Closes #21

See merge request tnir/docs.djangoproject.jp!19

Merge branch '23-update-go-to-1-11-in-test' into 'master'

Update Go to 1.11 in test

Closes #23

See merge request tnir/docs.djangoproject.jp!17

Merge branch '20-update-django-base-from-2-1-to-2-2' into 'master'

Update Django base from 2.1 to 2.2

Closes #20

See merge request tnir/docs.djangoproject.jp!14

Merge branch '19-update-alpine-to-3.8' into 'master'

Update Alpine to 3.8

Closes #19

See merge request tnir/docs.djangoproject.jp!13

Merge branch '15-create-cname' into 'master'

Create CNAME

Closes #15

See merge request tnir/docs.djangoproject.jp!11