Add default nginx.conf file

Dockerfile

@@ -6,13 +6,14 @@ ARG BUILD_ENV=prod
 
 RUN mkdir /app
 WORKDIR /app
-COPY package.json /app
-COPY yarn.lock /app
+COPY package.json yarn.lock /app/
 RUN yarn install
 
-COPY . /app/
+COPY src/ /app/src
+COPY public/ /app/public
 ENV REACT_APP_PRODUCTION_API_URL /api/v1
-RUN yarn build:${BUILD_ENV}
+RUN yarn run build:${BUILD_ENV}
 
 FROM nginx:alpine
-COPY --from=builder /app/build /assets
+COPY --from=builder /app/build /srv/www
+COPY nginx.conf /etc/nginx/templates/default.conf.template

nginx.conf

@@ -0,0 +1,30 @@
+server {
+  listen 80;
+  charset utf-8;
+
+  include /etc/nginx/mime.types;
+  default_type application/octet-stream;
+
+  gzip on;
+  sendfile on;
+  tcp_nopush on;
+  tcp_nodelay on;
+  keepalive_timeout 65;
+
+  location ~ ^/(api|admin) {
+    # /api and /admin routes are handled by the backend
+    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+    proxy_set_header Host $http_host;
+    proxy_redirect off;
+    proxy_pass $BACKEND_URL;
+  }
+
+  location / {
+    # other routes are served from static files. if the requested file is not
+    # found, the homepage (index.html) is served. this is needed because the
+    # frontend JS code uses the path component of the URL in its client-side
+    # routing.
+    root /srv/www;
+    try_files $uri $uri/ /index.html;
+  }
+}