rename docker-compose.yml file to docker-compose.yml.in, add all enviroment variabls to docker-compose.yml.in and a few Trailing whitespace too, update server/Reamdme.md

.gitignore

@@ -3,3 +3,4 @@
 build/
 server/config.js
 server/package-lock.json
+server/docker-compose.yml

server/README.md

@@ -64,11 +64,12 @@ fields:
 - `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.
+# 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.
+All settings are exposed into enviroment variables. That means you are able to config the backend server in [docker-compose.yml](docker-compose.yml.in) 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. 
+Save `docker-compose.yml.in` to `docker-compose.yml` and make changes if needed.
+Based on your docker setup you still need to edit a few lines in the `docker-compose.yml` file for networking. 
 
 For example by exposing ports:
 

server/docker-compose.yml.in

@@ -4,11 +4,17 @@ services:
     build:
       context: .
       dockerfile: docker/Dockerfile
+
     environment:
       port: 8080
       secret: 'the-shared-secret'
+      #allow_invalid_certificates: null
+      #use_auto_ecdh_curve: null
+      #cmd_pdftk: ''
+      #cmd_svg2pdf: ''
+
     #ports:  
-    #  - '8080:8080'
+    #- '8080:8080'
 
 #networks:  
 #  default: