Tweak Docker configuration, add Nginx conf

.dockerignore

@@ -1 +1,2 @@
 /node_modules
+/Dockerfile

Dockerfile

@@ -3,7 +3,9 @@ WORKDIR /build
 COPY package.json yarn.lock ./
 RUN yarn install --frozen-lockfile
 COPY . .
+ENV NODE_ENV production
 RUN yarn build:production
 
 FROM nginx:1.17-alpine
-COPY --from=build /build/dist /usr/share/nginx/html
+COPY ops/nginx/default.conf /etc/nginx/conf.d/default.conf
+COPY --from=build /build/dist/ /app

ops/nginx/default.conf

@@ -0,0 +1,10 @@
+server {
+  listen       80;
+  server_name  _;
+
+  location / {
+    root      /app;
+    index     index.html;
+    try_files $uri $uri/ $uri.html =404;
+  }
+}