Reduce size of docker image

[neteler]

Leftover openjdk8-...apk files in docker image
In this Dockerfile section openjdk8 packages are fetched:

https://github.com/mundialis/actinia_core/blob/fdc0d91d83a528a0584cf206f701a057ba01bb6d/docker/actinia-core-alpine/Dockerfile_runtime_pkgs#L99

but later not removed so that they remain in the docker image:

actinia:~$ docker exec -it 0cef  sh # dev
/src/actinia_core # cd /
/ # ls -la
total 62056
drwxr-xr-x   1 root root     4096 Jan  5 07:48 .
drwxr-xr-x   1 root root     4096 Jan  5 07:48 ..
-rwxr-xr-x   1 root root        0 Jan  5 07:48 .dockerenv
drwxr-xr-x   6 root root     4096 Dec 22 15:48 actinia_core
drwxr-xr-x   1 root root     4096 Oct 19 12:15 bin
drwxr-xr-x   1 root root     4096 Dec 22 15:46 build
drwxr-xr-x   5 root root      340 Jan  5 07:49 dev
drwxr-xr-x   1 root root     4096 Jan  5 07:49 etc
drwxr-xr-x   2 root root     4096 Dec 22 16:32 grassdb
drwxr-xr-x   2 root root     4096 May 29  2020 home
drwxr-xr-x   1 root root     4096 Oct 19 12:36 lib
drwxr-xr-x   5 root root     4096 May 29  2020 media
drwxr-xr-x   1 root root     4096 Jan  5 07:49 mnt
-rw-r--r--   1 root root 15755870 Oct 19 12:15 openjdk8-8.232.09-r0.apk
-rw-r--r--   1 root root   358826 Oct 19 12:15 openjdk8-jre-8.232.09-r0.apk
-rw-r--r--   1 root root  4591079 Oct 19 12:16 openjdk8-jre-base-8.232.09-r0.apk
-rw-r--r--   1 root root 42744528 Oct 19 12:16 openjdk8-jre-lib-8.232.09-r0.apk

Low prio but a bit of space could be saved removing them in the right moment (maybe already in line 103?) :-)

[anikaweinmann]

Also the /build/ folder is not removed so that it remain in the docker image:

docker run -it mundialis/actinia-core:0.99.24 -i
/src/actinia_core # ls -lah  /build/
total 608K
drwxr-xr-x 1 root root 4.0K Mar 11 08:24 .
drwxr-xr-x 1 root root 4.0K Apr  8 08:46 ..
-rw-r--r-- 1 root root 270K Mar 11 08:23 actinia_core-0.99.24-py2.py3-none-any.whl
-rw-r--r-- 1 root root  68K Mar 11 07:38 actinia_metadata_plugin.wsgi-1.0.0-py2.py3-none-any.whl
-rw-r--r-- 1 root root 184K Mar 11 07:38 actinia_module_plugin.wsgi-1.0.1-py2.py3-none-any.whl
-rw-r--r-- 1 root root  45K Mar 11 07:38 actinia_satellite_plugin-0.0.2-py2.py3-none-any.whl
-rw-r--r-- 1 root root  27K Mar 11 07:38 actinia_statistic_plugin-0.0.2-py2.py3-none-any.whl

[mmacata]

The openjdk8 packages are removed now as the new alpine uses a more recent version and this fix is no longer necessary. The /build/ files still exist. But they are only 856K in size and compared to the total size of ~3.12GB this is fine.

Will leave this ticket open nevertheless, due to the not little size it makes sense to look for options to increase the size.