Remove docker layer caching on Github Action

[lyrixx]

No description provided.

[lyrixx]

I'm not sure this cache layer works well. This build took

• cache restore: 0 sec
• docker build: 1m 50 sec
• cache store: 0 sec

Where others build took

• cache restore: ~30 sec
• docker build: ~ 1m 40 sec
• cache store: ~ 45 sec

So basically, we saved about 1 minutes by not using a cache !

I propose to merge #139 first, make another round of test, and if it's not better, let's drop that cache (less code == less bug)

[pyrech]

Yeah the Docker cache was a bit slow when I introduced it but it was still useful.

I have the feeling that after some time - when the cache become bigger and bigger - the restore step largely exceed build time from scratch.

An alternative of removing it entirely could be to reset it regularly (to not lose time by restoring old Docker images that are no longer used) but I'm not sure that is possible easily.

But yeah let see how it behaves with your recent changes 👍

[pyrech]

Oh I didn't see your latest comment.
That is really strange and that was not the case at the time 😕

[lyrixx]

I confirm the cache does not work as expected. I remove it.