Merge branch 'ci' into 'nc21'

Added gitlab ci

See merge request e/infra/selfhost/nextcloud-apps/ecloud-drop-account!11

.gitlab-ci.yml

+stages:
+    - deploy
+
+.deploy:nextcloud-app:
+    image: ubuntu:focal
+    stage: deploy
+    before_script: 
+      - mkdir $HOME/.ssh
+      - chmod 700 ~/.ssh
+      - echo "$SSH_PRIVATE_KEY_ED" > $HOME/.ssh/id_ed25519
+      - echo "$SSH_PUBKEY_ED" > $HOME/.ssh/id_ed25519.pub
+      - echo "$SSH_KNOWN_HOSTS" > $HOME/.ssh/known_hosts
+      - chmod 600 ~/.ssh/id_ed25519
+      - chmod 644 ~/.ssh/known_hosts ~/.ssh/id_ed25519.pub
+      - apt-get update && apt-get install -y openssh-client rsync
+    script:
+    - echo "Deploying to $CI_ENVIRONMENT_NAME ($DEPLOYMENT_HOST)"
+    - ssh $SSH_USER@$DEPLOYMENT_HOST "git clone --depth 1 $CI_REPOSITORY_URL --branch $DEPLOYMENT_BRANCH --single-branch /tmp/${CI_JOB_ID}/ecloud-accounts && sudo rsync -avzh --chown www-data:www-data --delete --exclude '.git*' /tmp/${CI_JOB_ID}/ecloud-accounts ${DEPLOYMENT_PATH}/html/custom_apps/ && rm -rf /tmp/${CI_JOB_ID}"
+
+
+deploy:dev01:
+    extends: .deploy:nextcloud-app
+    only:
+      - master
+      - main
+      - production
+      - nc21
+    environment:
+      name: dev/01
+      url: https://dev.eeo.one/
+    variables:
+      DEPLOYMENT_BRANCH: $CI_COMMIT_BRANCH
+      CONTAINER_NAME: dev01_nextcloud
+
+deploy:dev02:
+  extends: .deploy:nextcloud-app
+  when: manual
+  only:
+    - master
+    - main
+    - production
+    - nc21
+  environment:
+    name: dev/02
+    url: https://ecloud02.dev.eeo.one
+  variables:
+    DEPLOYMENT_BRANCH: $CI_COMMIT_BRANCH
+    CONTAINER_NAME: dev02_nextcloud
+
+deploy:dev03:
+  extends: .deploy:nextcloud-app
+  when: manual
+  only:
+    - master
+    - main
+    - production
+    - nc21
+  environment:
+    name: dev/03
+    url: https://ecloud03.dev.eeo.one
+  variables:
+    DEPLOYMENT_BRANCH: $CI_COMMIT_BRANCH
+    CONTAINER_NAME: dev03_nextcloud
+
+deploy:staging:
+  extends: .deploy:nextcloud-app
+  when: manual
+  only:
+    - master
+    - main
+    - production
+    - nc21
+  environment:
+    name: staging/01
+    url: https://eeo.one
+  variables:
+    DEPLOYMENT_BRANCH: $CI_COMMIT_BRANCH
+    CONTAINER_NAME: nextcloud