chore: Merge branch '16-correct-backup' into 'master'

feat(ci): backup the whole web directory without dereferencing symlinks;...

Closes #16

See merge request core-services/r3lab/r3-pages!16

.gitlab-ci.yml

@@ -57,4 +57,5 @@ Create the backup:
     - echo "$KNOWNHOSTS" > ~/.ssh/known_hosts
     - chmod 644 ~/.ssh/known_hosts
   script:
-    - ssh -p $SSHPORT $SSHCONNECT "mkdir -p ~/web/latest ~/backups/; cd ~/web/; tar -zchvf ~/backups/backup_$(date +'%Y_%m_%d').tar.gz latest"
+    - ssh -p $SSHPORT $SSHCONNECT "mkdir -p ~/web ~/backups/; cd; tar -zcvf ~/backups/backup_$(date +'%Y_%m_%d').tar.gz web"
+    - ssh -p $SSHPORT $SSHCONNECT "cd ~/backups/; ls -tr | head -n -3 | xargs --no-run-if-empty rm "