Convert Linux Tests on Travis to Tests on Github Actions

[AndreMikulec]

Dave Cramer,

I am receiving this message everytime, that I login to Travis (https://travis-ci.org/).

Please be aware travis-ci.org will be shutting down in several weeks, 
with all accounts migrating to travis-ci.com. Please stay tuned here for more information.

I am aware that plr uses Travis to "test a build".

Perhaps, plr can also use another CI to also "test a build", for example, in the case that Travis actually, does stop serving open source projects.

One possible CI, is Github Actions.

[AndreMikulec]

Dave Cramer,

I read the Travis file travis.yml, and based on what I read, I made a Github Actions file .github/workflows/build.yml. Using the new build.yml file and Github Actions, I successfully built and tested plr with versions of PostgreSQL from 9.5 through 13.

In the file ".github/workflows/build.yml" only some minor changes were done.

1. Changed
   setfacl -Rm u:postgres:rwx,d:u:travis:rwx $HOME
   to
   sudo setfacl -Rm u:postgres:rwx,d:u:runner:rwx /home/runner

In Travis, the build-test runs under "travis".
In Github Actions, the build-test runs under "runner".

In Travis, $HOME may be volatile.
In Github Actions, $HOME is static at /home/runner.

In Travis, to use "setfacl", elevated privileges are not needed.
In Github Actions, to use "setfacl", elevated priviledges are needed.

2. Changed

sudo make install

to

sudo USE_PGXS=1 make install

In Travis, the first former case works.
In Github Actions, the former case does not work; I received errors.
To make the build-test work, I used "USE_PGXS=1".

Changed
single-line commands
into
multi-line commands

This was not required. This minimized the number of processes. It looks cleaner.

Here is the commit
AndreMikulec@9da5156
in branch
https://github.com/AndreMikulec/plr/tree/83_Convert_Linux_Tests_on_Travis_to_Tests_on_Github_Actions

Here is the build result.
https://github.com/AndreMikulec/plr/actions/runs/669678071

Here is the PostgreSQL 13 run result.
https://github.com/AndreMikulec/plr/runs/2153212316?check_suite_focus=true

What do you think?

Do you think that build-tests, using Github Actions, may become a permanent part of "postgres-plr?

[davecramer]

Well the simplest solution would be to move to travis-ci.com, but I prefer github actions. So I'd be up for this. Can you create a PR for it