build: add docker conf

.dockerignore

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+README.md
+node_modules
+package-lock.json
+.git

Dockerfile

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+FROM nginx
+COPY build /usr/share/nginx/html
+RUN rm etc/nginx/conf.d/default.conf
+COPY nginx/nginx.conf etc/nginx/conf.d/
+CMD ["nginx", "-g", "daemon off;"]

nginx/nginx.conf

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+server {
+    listen 80 default_server;
+    server_name /usr/share/nginx/html;
+
+    root /usr/share/nginx/html;
+    index index.html;
+
+    location ~* \.(?:manifest|appcache|html?|xml|json)$ {
+      expires -1;
+      # access_log logs/static.log; # I don't usually include a static log
+    }
+
+    location ~* \.(?:css|js)$ {
+      try_files $uri =404;
+      expires 1y;
+      access_log off;
+      add_header Cache-Control "public";
+    }
+
+    location /static {
+        alias /var/www/static;
+        expires max;
+    }
+
+    # Any route containing a file extension (e.g. /devicesfile.js)
+    location ~ ^.+\..+$ {
+      try_files $uri =404;
+    }
+
+    # Any route that doesn't have a file extension (e.g. /devices)
+    location / {
+        try_files $uri $uri/ /index.html;
+    }    
+}