Serve React applicaiton with Nginx in k8s

A few things I’ve learned after deploying React application + nginx in Kubernetes.

nobody user

To run a process as non-root you don’t need create a user in your docker image. Just use the nobody:

docker run --user="nobody"

nginx read-only container

To succesfully run a read only container with nginx don’t forget to pass some volumes:

docker run --read-only --tmpfs "/var/cache/nginx" --tmpfs "/run" --rm nginx-react-app

In k8s add volumes and use them as the container’s volumeMounts.


events {}

http {
  server {
    # non-root user can't listen 80 port
    listen 8080;
    root /usr/share/nginx/html;

    location / {
      # tricky location here because the app works on
      location ~ .*/(\w+\.\w+).js(.map)?$ {
        try_files $uri /$1.js$2;

      try_files $uri /index.html;


FROM node:14.15 as build


COPY ["package.json", "yarn.lock", "./"]

RUN yarn install --frozen-lockfile --production

COPY . .

# rm nginx.conf to make layers work
RUN rm nginx.conf \
  # The app should be bundled with webpack's HtmlWebpackPlugin.publicPath = 'auto'
  && yarn build

FROM nginx:1.19

COPY nginx.conf /etc/nginx/nginx.conf
COPY --from=build /app/dist /usr/share/nginx/html

CMD ["nginx", "-g", "daemon off;"]