Please fix google-gke-kubectl-run, backup folder means an oversized image

[Tommo]

• the version of the pipe - 

  atlassian/google-gke-kubectl-run:3.0.0

• relevant logs and error messages

  google-gke-kubectl-run:3.0.0-without-backup-folder <none> 61abf4e9da2d 20 seconds ago 2.08GB
  
  google-gke-kubectl-run:3.0.0 <none> f637d02b9abb 7 minutes ago 2.81GB

• steps to reproduce
  Modify the various docker images and compare.

After consulting Google's version of the docker file https://github.com/GoogleCloudPlatform/cloud-sdk-docker/blob/master/debian_component_based/Dockerfile

And comparing that with Atlassian's version: https://bitbucket.org/atlassian/google-gke-kubectl-run/src/master/Dockerfile I conclude that the Atlassian pipe google-gke-kubectl-run lacks this step.

`rm -rf /google-cloud-sdk/.install/.backup`

As a result, the image is over 200MB larger as a result, over 25% larger than it needs to be. Since the image is over 700MB now, you should definitely remove the backup from your image.

More specifically, modify line 27:

- RUN ./google-cloud-sdk/install.sh --quiet

+ RUN ./google-cloud-sdk/install.sh --quiet && rm -rf /google-cloud-sdk/.install/.backup

Atlassian's "slim" version based on 442.0.0:
753.52 MB https://hub.docker.com/r/bitbucketpipelines/google-gke-kubectl-run/tags

Google's slim version:
424.6 MB https://hub.docker.com/r/google/cloud-sdk/tags?page=1&name=442.0.0-slim

Note that this is compressed size. The majority of that is the `/google-cloud-sdk/.install/.backup` folder but it looks like you might get 100MB smaller. 

Uncompressed I see 2.81GB vs 2.08GB just by removing the `/google-cloud-sdk/.install/.backup` directory.

Build just like it's set up in the Bitbucket:

> docker build -t docker build -t google-gke-kubectl-run:3.0.0 .

Modify line 27 as described and build:

> docker build -t google-gke-kubectl-run:3.0.0-without-backup-folder .

> docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
google-gke-kubectl-run 3.0.0-without-backup-folder 61abf4e9da2d 20 seconds ago 2.08GB
google-gke-kubectl-run 3.0.0 f637d02b9abb 7 minutes ago 2.81GB

[Igor Stoyanov · Accepted solution]

@Tommo hi. New pipe version released with fixes you suggested.

Regards, Igor

[Tommo]

Looks good to me. Saved 193MB.

[Igor Stoyanov]

@Tommo hi. Thanks for your investigation. We will fix this in a future releases and notify you.

Regards, Igor