update to Dockerfile to make the build much smaller.

compose/nginx.conf

@@ -0,0 +1,23 @@
+upstream cbwebreader_django {
+    server cbwebreader:8000;
+}
+
+server {
+
+    listen 80;
+
+    location / {
+        proxy_pass http://cbwebreader_django;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header Host $host;
+        proxy_redirect off;
+    }
+
+    location /static/ {
+        alias /static/;
+    }
+    location /media/ {
+        alias /media/;
+    }
+
+}