Update install.sh

1 job for master in 23 seconds (queued for 1 second)
Name Stage Failure
test-install-script Test
++ bash install.sh
++ printf 'test.deployment\ntest\ncontact@test.deployment\nY\nN\n\n\n\N\n\n\n'

No FUNKWHALE_VERSION found and the script didn't include a default one.
Relaunch the script with FUNKWHALE_VERSION=yourdesiredversion
Running after_script
Uploading artifacts for failed job
Authenticating with credentials from /root/.docker/config.json
ERROR: Job failed: exit code 1