Docker install (#7)

Add Dockerfile to support usage via Docker. Upload images on Dockerhub.

Dockerfile

@@ -0,0 +1,11 @@
+FROM nginx:alpine
+EXPOSE 80
+ENV LISTEN_PORT=80 \
+  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/
+
+CMD /bin/sh -c "envsubst '\${SERVER_HOST} \${SERVER_PORT} \${LISTEN_PORT}' < /etc/nginx/nginx.tmpl > /etc/nginx/nginx.conf && nginx -g 'daemon off;' || ( env; cat /etc/nginx/nginx.conf )"

README.md

@@ -12,8 +12,33 @@ This is a web interface for [OwnTracks](https://github.com/owntracks/recorder),
 
 ## Installation
 
+### Manual install
+
 Clone the repository and copy `index.html` and the `static/` directory to your server's webroot. The API is expected to be reachable under the same domain as the web interface.
 
+### Docker
+
+You can launch directly via Docker run like this:
+```console
+$ docker run -d -p 80:80 -e SERVER_HOST=otrecorder-host -e SERVER_PORT=otrecorder-port cosme/owntracks-ui
+```
+
+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
+version: '3'
+
+services:
+  owntracks-ui:
+    image: cosme/owntracks-ui
+    ports:
+      - 80:80
+    environment:
+      - SERVER_HOST=otrecorder
+      - SERVER_PORT=8083
+    restart: unless-stopped
+```
+
 ## Features
 
 - Enable or disable multiple layers:

nginx.tmpl

@@ -0,0 +1,27 @@
+worker_processes 1;
+events {
+    worker_connections 1024;
+}
+http {
+    upstream otrecorder {
+        server ${SERVER_HOST}:${SERVER_PORT};
+    }
+    server {
+        listen ${LISTEN_PORT};
+        root /usr/share/nginx/html;
+        location /api {
+            proxy_pass http://otrecorder/api/;
+        }
+        location /ws {
+            proxy_pass http://otrecorder/ws/;
+            proxy_http_version 1.1;
+            proxy_set_header Upgrade $http_upgrade;
+            proxy_set_header Connection upgrade;
+        }
+        location / {
+            include /etc/nginx/mime.types;
+            try_files $uri $uri/index.html;
+        }
+    }
+}
+