Add colmena apply stage

.gitlab-ci.yml

@@ -22,9 +22,19 @@ apply:
   stage: apply
   script:
     - nix-env --install colmena
+    - eval $(ssh-agent -s)
+    - chmod 600 "$SSH_PRIVATE_KEY"
+    - ssh-add "$SSH_PRIVATE_KEY"
+    - git clone https://oauth2:${ACCESS_TOKEN_KNOWN_HOSTS}@git.grzb.de/yuri/known_hosts.git /root/.ssh
     - colmena apply --no-keys
 
 commit_flake:
   stage: commit_flake
+  variables:
+    GIT_AUTHOR_EMAIL: $GIT_AUTHOR_EMAIL
+    GIT_AUTHOR_NAME: $GIT_AUTHOR_NAME
+    GIT_COMMITTER_EMAIL: $GIT_COMMITTER_EMAIL
+    GIT_COMMITTER_NAME: $GIT_COMMITTER_NAME
+    ACCESS_TOKEN: $ACCESS_TOKEN
   script:
-    - echo "commit_flake"
+    - nix-env --install git