Use nginx to serve built files (#808)

Resolves #842
Better suited than python + handles sigterm better

Co-authored-by: Harel M <harel.mazor@gmail.com>

Dockerfile

@@ -6,17 +6,11 @@ COPY package.json package-lock.json ./
 RUN npm install
 
 # Build maputnik
-# TODO:  we should also do a   npm run test   here (needs more dependencies)
 COPY . .
 RUN npm run build
 
 #---------------------------------------------------------------------------
+# Create a clean nginx-alpine slim image with just the build results
+FROM nginx:alpine-slim
 
-# Create a clean python-based image with just the build results
+COPY --from=builder /maputnik/dist /usr/share/nginx/html/
-FROM python:3-slim
-WORKDIR /maputnik
-
-COPY --from=builder /maputnik/dist .
-
-EXPOSE 8888
-CMD python -m http.server 8888