add docker-compose.yml, refactor for docker volume usage

user defined data should not be mixed with static application data in
one directory.

therefore we need to move some files like db and userconfig to separate
directories, which can then be declared as docker volumes.

docker-compose.yml

@@ -0,0 +1,47 @@
+---
+version: "3.4"
+
+services:
+  app:
+    image: hargata/lubelog:latest
+    build: .
+    restart: unless-stopped
+    # volumes used to keep data persistent
+    volumes:
+      - config:/App/config
+      - data:/App/data
+      - documents:/App/wwwroot/documents
+      - images:/App/wwwroot/images
+      - log:/App/log
+    # expose port and/or use serving via traefik
+    ports:
+      - 8080:8080
+    # traefik configurations, including networks can be commented out if not needed
+    networks:
+      - traefik-ingress
+    labels:
+      ## Traefik General
+      # We set 'enable by default' to false, so this tells Traefik we want it to connect here
+      traefik.enable: true
+      # define network for traefik<>app communication
+      traefik.docker.network: traefik-ingress
+      ## HTTP Routers
+      traefik.http.routers.whoami.entrypoints: https
+      traefik.http.routers.whoami.rule: Host(`lubelog.mydomain.tld`)
+      ## Middlewares
+      #traefik.http.routers.whoami.middlewares: authentik@docker
+      # none
+      ## HTTP Services
+      traefik.http.services.whoami.loadbalancer.server.port: 5000
+
+volumes:
+  config:
+  data:
+  documents:
+  images:
+  log:
+
+networks:
+  app:
+  traefik-ingress:
+    external: true