moving docker files into server dirctory, building docker image from checked out code, mergeing Server Readme.md and adding notes regarding docker-compose networking

docker/README.md

@@ -1,8 +0,0 @@
-# run pdfdraw backend in a docker container using docker-compose.
-
-all settings are exposed into enviroment variables. That means you are able to config the backend server in [docker-compose.yml](docker-compose.yml) yaml file by edting the corresponding enviroment variables.
-
-Than run docker compose.
-
-    docker-compose up -d
-

docker/docker-compose.yml

@@ -1,8 +0,0 @@
-version: '2'
-services:
-  pdfdraw-server:
-    build:
-      context: .
-    environment:
-      port: 8080
-      secret: 'the-shared-secret'

server/README.md

@@ -63,3 +63,27 @@ fields:
 - `author` (string): Optional author name to add to the annotation metadata.
 - `modified` (number): Optional timestamp (seconds since the epoch, in UTC)
   when the annotation was last modified.
+
+# run pdfdraw server in a docker container using docker-compose.
+
+all settings are exposed into enviroment variables. That means you are able to config the backend server in [docker-compose.yml](docker-compose.yml) yaml file by editing the corresponding enviroment variables.
+
+Based on your docker setup you still need to edit a few lines in the [docker-compose.yml](docker-compose.yml) file for networking. 
+
+For example by exposing ports:
+
+    ports:  
+      - "8080:8080"
+ 
+or join an existing network:
+
+    networks:  
+      default:
+        external:
+           name: my-pre-existing-network
+
+For more details read [Networking in Compose](https://docs.docker.com/compose/networking/)
+
+Than run docker compose.
+
+    docker-compose up -d

server/docker-compose.yml

@@ -0,0 +1,16 @@
+version: '2'
+services:
+  pdfdraw-server:
+    build:
+      context: .
+      dockerfile: docker/Dockerfile
+    environment:
+      port: 8080
+      secret: 'the-shared-secret'
+    #ports:  
+    #  - '8080:8080'
+
+#networks:  
+#  default:
+#    external:
+#      name: my-pre-existing-network

server/docker/Dockerfile

@@ -1,8 +1,7 @@
 FROM nikolaik/python-nodejs:python3.9-nodejs15
 
-RUN wget -qO- https://github.com/strukturag/pdfdraw/archive/v0.1.2.tar.gz | tar -C /tmp -xvz --strip 1
-RUN cp -r /tmp/server /app
-ADD config.js.docker /app/config.js
+ADD . /app
+ADD docker/config.js.docker /app/config.js
 
 RUN apt-get update || : && apt-get install pdftk python-pypdf2 -y