Nginx subdirectory as root for React

{
  "name": "devopsvn",
  "homepage": "/foo"
  ...
}

REACT_APP_PUBLIC_URL=/foo

server {
  listen 80;
  root /usr/share/nginx/html;

  location / {
    absolute_redirect off;
    return 301 /foo$request_uri;
  }

  location /foo/ { # end with /
    try_files $uri $uri/ /foo/index.html;
  }
}

FROM node:20-alpine as build

WORKDIR /app
COPY package*.json ./
RUN npm install
COPY . .
RUN npm run build

FROM nginx:stable-alpine
# Update here
COPY --from=build /app/build /usr/share/nginx/html/foo
COPY nginx.conf /etc/nginx/nginx.conf
EXPOSE 80
CMD ["nginx", "-g", "daemon off;"]