chore: add Dockerfile & ci for publishing dev images

.woodpecker/docker.yml

@@ -0,0 +1,20 @@
+branches: [dev]
+platform: 'linux/amd64'
+depends_on:
+  - build
+
+pipeline:
+  dev:
+    image: 'woodpeckerci/plugin-docker-buildx'
+    secrets: 
+      - 'docker_username'
+      - 'docker_password'
+    settings:
+      registry: 'git.rustybever.be'
+      repo: 'git.rustybever.be/chewing_bever/rieter'
+      tags:
+        - 'dev'
+      platforms: [ 'linux/amd64' ]
+    when:
+      event: push
+      branch: dev