add drone config

.drone.yml

@@ -0,0 +1,38 @@
+---
+kind: pipeline
+type: docker
+name: default
+
+platform:
+  os: linux
+  arch: amd64
+
+steps:
+- name: Version check
+  image: jguyomard/hugo-builder
+  commands:
+  - echo "Checking Hugo version."
+  - hugo version
+
+- name: Build
+  image: jguyomard/hugo-builder
+  commands:
+  - hugo --minify --destination /drone/src/build
+
+- name: Upload
+  image: jguyomard/hugo-builder
+  commands:
+  - eval `ssh-agent -s`
+  - echo "$SSH_KEY" | ssh-add -
+  - mkdir -p ~/.ssh
+  - echo -e "Host *\n\tStrictHostKeyChecking no\n\n" > ~/.ssh/config
+  - rsync -rv -e "ssh -6 -p 22" /drone/src/build/ root@pasiphae.int.goe.de.n0emis.eu:/var/www/n0emis.eu/ --checksum
+  environment:
+    SSH_KEY:
+      from_secret: ssh_key
+
+trigger:
+  branch:
+  - main
+
+...