add .gitignore + clean up useless folders

.drone.yml

@@ -0,0 +1,60 @@
+kind: pipeline
+	name: mkdocs build and deploy
+	type: docker
+	platform:
+	  os: linux
+	  arch: arm64
+	trigger:
+	  branch:
+	    - master
+	
+	steps:
+	
+	# - name: git pull submodules
+	#   image: alpine/git
+	#   settings:
+	#     user:
+	#       from_secret: GIT_USER
+	#     password:
+	#       from_secret: GIT_PASSWORD
+	#   commands:
+	#       - git submodule update --init --recursive
+	
+	- name: build mkdocs site
+	  image: plugins/docker
+	    output: ./site
+	  command: ["mkdocs build"]
+
+	
+	- name: deploy on server
+	  image: drillster/drone-rsync
+	  settings:
+	    hosts: ["192.168.1.101"]
+	    target: /home/gregan/workspace/mkdocs/doc/site
+	    source: site/*
+	    port:
+	      from_secret: RSYNC_PORT
+	    user:
+	      from_secret: RSYNC_USER_STACK
+	    key:
+	      from_secret: RSYNC_SSH_KEY_STACK
+	      
+	- name: notification
+	  image: appleboy/drone-telegram
+	  settings:
+	    token: 
+	      from_secret: TELEGRAM_TOKEN
+	    to: 
+	      from_secret: TELEGRAM_USERID
+	  when:
+	    status:
+	      - failure
+	      - success
+	    format: markdown
+	    message: >
+	      📝 {{repo.name}} / {{commit.branch}} - {{commit.message}}
+	      {{#success build.status}}
+	        ✅ succeeded  for 👷‍♂️ build {{build.number}}
+	      {{else}}
+	        🛑 failed for 👷‍♂️ build {{build.number}}
+	      {{/success}}