Docker overhaul

[heavelock]

Installs all dependencies for the obspy & cartopy in the image itself

[heavelock]

@barsch Could you take a look?

[barsch]

sorry absolutely no time this week - will try to work on it early next week

[barsch]

@heavelock hmm I'm no docker guru - I guess I need a bit help - also see comments below:

barsch@test:~$ docker ps -a
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES
barsch@test:~$ docker images -a
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
barsch@test:~$ docker build https://github.com/heavelock/sphinx-action.git
Sending build context to Docker daemon  199.7kB
Step 1/5 : FROM sphinxdoc/sphinx:2.4.4
2.4.4: Pulling from sphinxdoc/sphinx
68ced04f60ab: Pull complete
d1d516f83cca: Pull complete
1c69061f55c9: Pull complete
cb02ba23f0ac: Pull complete
b1ed9df08170: Pull complete
24d789e44356: Pull complete
7142468f7572: Pull complete
76935118a55e: Pull complete
60e4a3211b21: Pull complete
Digest: sha256:64a91f76bd196e7d4d860f17ebfd0140c22e00c8d7cd1316812184b974d0499f
Status: Downloaded newer image for sphinxdoc/sphinx:2.4.4
 ---> 05d7cae90862
Step 2/5 : LABEL "maintainer"="Ammar Askar <ammar@ammaraskar.com>"
 ---> Running in 415e5df5b2ef
Removing intermediate container 415e5df5b2ef
 ---> efdf7312f51e
Step 3/5 : ADD entrypoint.py /entrypoint.py
 ---> d1f90f60bb20
Step 4/5 : ADD sphinx_action /sphinx_action
 ---> 65e1a6c3d4fc
Step 5/5 : ENTRYPOINT ["/entrypoint.py"]
 ---> Running in 81f5c196fce5
Removing intermediate container 81f5c196fce5
 ---> 40ba015b6628
Successfully built 40ba015b6628
barsch@test:~$ docker ps -a
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES
barsch@test:~$ docker images -a
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
<none>              <none>              40ba015b6628        9 seconds ago       462MB
<none>              <none>              efdf7312f51e        9 seconds ago       462MB
<none>              <none>              d1f90f60bb20        9 seconds ago       462MB
<none>              <none>              65e1a6c3d4fc        9 seconds ago       462MB
sphinxdoc/sphinx    2.4.4               05d7cae90862        11 months ago       462MB
barsch@test:~$

uff a lot of images - also don't like that those are named <none>

now how to proceed?

barsch@test:~$ docker run --name obspy 40ba015b6628
[sphinx-action] Starting sphinx-action build.
====================================
Building docs in None
====================================
Traceback (most recent call last):
  File "/entrypoint.py", line 22, in <module>
    action.build_all_docs(github_env, [os.environ.get("INPUT_DOCS-FOLDER")])
  File "/sphinx_action/action.py", line 152, in build_all_docs
    return_code, annotations = build_docs(github_env.build_command, docs_dir)
  File "/sphinx_action/action.py", line 100, in build_docs
    raise ValueError("Build command may not be empty")
ValueError: Build command may not be empty
barsch@test:~$ docker ps -a
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS                     PORTS               NAMES
b17d8b524601        40ba015b6628        "/entrypoint.py"    5 seconds ago       Exited (1) 4 seconds ago                       obspy
barsch@test:~$ docker ps -a
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS                     PORTS               NAMES
b17d8b524601        40ba015b6628        "/entrypoint.py"    2 minutes ago       Exited (1) 9 seconds ago                       obspy
barsch@test:~$ docker rm b17d8b524601
b17d8b524601
barsch@test:~$ docker run --name obspy 40ba015b6628 html
[sphinx-action] Starting sphinx-action build.
====================================
Building docs in None
====================================
Traceback (most recent call last):
  File "/entrypoint.py", line 22, in <module>
    action.build_all_docs(github_env, [os.environ.get("INPUT_DOCS-FOLDER")])
  File "/sphinx_action/action.py", line 152, in build_all_docs
    return_code, annotations = build_docs(github_env.build_command, docs_dir)
  File "/sphinx_action/action.py", line 100, in build_docs
    raise ValueError("Build command may not be empty")
ValueError: Build command may not be empty
barsch@test:~$ docker ps -a
CONTAINER ID        IMAGE               COMMAND                 CREATED             STATUS                     PORTS               NAMES
6fabbd13f235        40ba015b6628        "/entrypoint.py html"   3 seconds ago       Exited (1) 3 seconds ago                       obspy

[heavelock]

Now, looking at this PR from the perspective of how you wanted to use it, I see that I will have to redo it.

To explain how it works now:
This image has entrypoint that is base of the sphinx-action Github Action. The action itself is interpreting the events sent by github and parsing output from sphinx and then it just adds it to a visible place in the workflow's interface.

Image itself in this is not easily usable because it requires a few environment variables that are passed from the GH Action system.

So my plan for now:

1. Create a separate image for building docs that everybody will just be able to build and use on their own.
2. Add it to the main obspy repo (or maybe a separate project? how do you think?) and make GH Action workflow to build it and push it to https://hub.docker.com/u/obspy.
3. This repo will be using that image as a base and will just add the entrypoint and all the stuff that the sphinx-action itself requires to run.

What do you think?

[barsch]

yes, I am definitely in favor of a standalone Docker image - usable as shown above - if we can reuse this image than for github action than it would be perfect. Adding this to the main repo is IMHO also the best solution - currently the doc builder scripts are already part of it (https://github.com/obspy/obspy/tree/master/misc/docs).