Integrate drone with github instead of gitea

docker/.env.example

@@ -51,10 +51,18 @@ GITEA_MYSQL_USER=
 GITEA_MYSQL_PASSWORD=
 
 # drone
-DRONE_GITEA_SERVER=https://git.domain.com
+# gitea integration is disabled right now, instead i use github
+#DRONE_GITEA_SERVER=https://git.domain.com
+# generate these in gitea
+#DRONE_GITEA_CLIENT_ID=
+#DRONE_GITEA_CLIENT_SECRET=
+DRONE_GITHUB_CLIENT_ID=
+DRONE_GITHUB_CLIENT_SECRET=
 DRONE_SERVER_HOST=https://drone.domain.com
 DRONE_RPC_SECRET=
-# generate these in gitea
-DRONE_GITEA_CLIENT_ID=
-DRONE_GITEA_CLIENT_SECRET=
 DRONE_USER_CREATE=username:<--USERNAME-->,machine:false,admin:true,token:${DRONE_RPC_SECRET}
+
+# collabora
+COLLABORA_USERNAME=
+COLLABORA_PASSWORD=
+COLLABORA_DOMAIN=