Add CI_SSH_PASS environment mapping

This will add a script and setup ssh to use it to retrieve the ssh
passphrase from the given environment variable.
1 job for master in 3 minutes and 17 seconds (queued for 3 seconds)
latest
Status Job ID Name Coverage
  Build
failed #1428
docker
build-master

00:03:17

 
Name Stage Failure
failed
build-master Build
 * [new ref]         refs/pipelines/905 -> refs/pipelines/905
* [new branch] master -> origin/master
Checking out 272ce387 as master...

Skipping Git submodules setup
$ docker login -u "$CI_REGISTRY_USER" -p "$CI_REGISTRY_PASSWORD" $CI_REGISTRY
WARNING! Using --password via the CLI is insecure. Use --password-stdin.
Error response from daemon: Get https://registry-1.docker.io/v2/: unauthorized: incorrect username or password
ERROR: Job failed: exit code 1