For some folks who will get in trouble with refresh the angular page and get a 404.

update the Dockerfile:

# base image
FROM node:latest as node

# set working directory
WORKDIR /app

# install and cache app dependencies
COPY . .
RUN npm install
RUN npm run build --prod

FROM nginx:alpine
RUN rm -rf /usr/share/nginx/html/* && rm -rf /etc/nginx/nginx.conf
COPY ./nginx.conf /etc/nginx/nginx.conf
COPY --from=node /app/dist /usr/share/nginx/html

and create a .nginx.conf at your root project folder with

worker_processes  1;

events {
    worker_connections  1024;
}

http {
    server {
        listen 80;
        server_name  localhost;

        root   /usr/share/nginx/html;
        index  index.html index.htm;
        include /etc/nginx/mime.types;

        gzip on;
        gzip_min_length 1000;
        gzip_proxied expired no-cache no-store private auth;
        gzip_types text/plain text/css application/json application/javascript application/x-javascript text/xml application/xml application/xml+rss text/javascript;

        location / {
            try_files $uri $uri/ /index.html;
        }
    }
}

that will solve the issue of 404 when you are in a know page after refresh