Apply suggestions from code review

Co-Authored-By: Linus Groh <mail@linusgroh.de>

Dockerfile

@@ -1,12 +1,12 @@
 FROM nginx:alpine
 EXPOSE 80
 ENV LISTEN_PORT=80 \
-  SERVER_URL=otrecorder \
+  SERVER_HOST=otrecorder \
   SERVER_PORT=80
 
 COPY nginx.tmpl /etc/nginx/nginx.tmpl
 COPY index.html /usr/share/nginx/html
 COPY static/ /usr/share/nginx/html/static/
 RUN ls /usr/share/nginx/html/*
-CMD /bin/sh -c "envsubst '\${SERVER_URL} \${SERVER_PORT} \${LISTEN_PORT}' < /etc/nginx/nginx.tmpl > /etc/nginx/nginx.conf && nginx -g 'daemon off;' || cat /etc/nginx/nginx.conf"
+CMD /bin/sh -c "envsubst '\${SERVER_HOST} \${SERVER_PORT} \${LISTEN_PORT}' < /etc/nginx/nginx.tmpl > /etc/nginx/nginx.conf && nginx -g 'daemon off;' || cat /etc/nginx/nginx.conf"
 

README.md

@@ -20,27 +20,25 @@ Clone the repository and copy `index.html` and the `static/` directory to your s
 
 ### Docker
 
-You can launch directly via docker run like this :
+You can launch directly via Docker run like this:
 ```bash
 docker run -d -p 80:80 -e SERVER_URL=otrecorder-url -e SERVER_PORT=otrecorder-port cosme/owntracks-ui
 ```
 
-Or you can use docker-compose (if you also run otrecorder with the default compose config, and the service is named `otrecorder`):
+Or you can use `docker-compose` (if you also run the OwnTracks Recorder with the default compose config, and the service is named `otrecorder`):
 
-``` yaml
+```yaml
 version: '3'
 
 services:
-
   owntracks-ui:
     image: cosme/owntracks-ui
     ports:
       - 80:80
     environment:
-      - SERVER_URL=otrecorder 
+      - SERVER_HOST=otrecorder
       - SERVER_PORT=8083
     restart: unless-stopped
-
 ```
 
 ## Features

nginx.tmpl

@@ -12,7 +12,7 @@ http {
         location /api {
             proxy_pass http://otrecorder/api/;
         }
-         location /ws {
+        location /ws {
             proxy_pass http://otrecorder/ws/;
             proxy_http_version 1.1;
             proxy_set_header Upgrade $http_upgrade;