404 Error on page refresh with Angular 7, NGINX and Docker

Question

I have an application written in Angular 7 that I am deploying to a Docker container with NGINX. When I run the container, everything works perfectly except that if i Refresh the page in the browser (F5) I get an NGINX 404 error page.

Here is my nginx.conf file from which you can see ive tried "try_files"

user  nginx;
worker_processes  1;

error_log  /var/log/nginx/error.log warn;
pid        /var/run/nginx.pid;


events {
    worker_connections  1024;
}


http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

    access_log  /var/log/nginx/access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    keepalive_timeout  65;

    gzip  on;

    include /etc/nginx/conf.d/*.conf;

    server {
        listen 80; 

        location / {
            root /usr/share/nginx/html;
            index index.html;
            try_files $uri /index.html;
        }
    }
}

My Dockerfile:

FROM node:alpine as builder
RUN apk update && apk add --no-cache make git

WORKDIR /app

COPY package.json package-lock.json /app/
RUN cd /app && npm install

COPY .  /app
RUN cd /app && npm run build

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=builder /app/dist/hyper-client-admin /usr/share/nginx/html
EXPOSE 80
CMD ["nginx", "-g", "daemon off;"]

Directory on the deployed container is:

/usr/share/nginx/html # ls -la
total 23564
drwxr-xr-x    1 root     root          4096 May 20 00:18 .
drwxr-xr-x    1 root     root          4096 Mar  8 03:05 ..
drwxr-xr-x    2 root     root          4096 May 20 00:18 assets
-rw-r--r--    1 root     root        290728 May 20 00:18 es2015-polyfills.js
-rw-r--r--    1 root     root        211178 May 20 00:18 es2015-polyfills.js.map
-rw-r--r--    1 root     root           997 May 20 00:18 favicon.png
-rw-r--r--    1 root     root           770 May 20 00:18 index.html
-rw-r--r--    1 root     root        114749 May 20 00:18 main.js
-rw-r--r--    1 root     root        115163 May 20 00:18 main.js.map
-rw-r--r--    1 root     root        241546 May 20 00:18 polyfills.js
-rw-r--r--    1 root     root        240220 May 20 00:18 polyfills.js.map
-rw-r--r--    1 root     root          6224 May 20 00:18 runtime.js
-rw-r--r--    1 root     root          6214 May 20 00:18 runtime.js.map
-rw-r--r--    1 root     root       1117457 May 20 00:18 styles.js
-rw-r--r--    1 root     root       1191427 May 20 00:18 styles.js.map
-rw-r--r--    1 root     root      10048515 May 20 00:18 vendor.js
-rw-r--r--    1 root     root      10505601 May 20 00:18 vendor.js.map

And here is the console output:

172.17.0.1 - - [20/May/2019:00:18:30 +0000] "GET / HTTP/1.1" 200 371 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.157 Safari/537.36" "-"lopment\hyper-client-admin>
172.17.0.1 - - [20/May/2019:00:18:30 +0000] "GET /runtime.js HTTP/1.1" 200 6224 "http://localhost:81/" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.157 Safari/537.36" "-"
172.17.0.1 - - [20/May/2019:00:18:30 +0000] "GET /polyfills.js HTTP/1.1" 200 241546 "http://localhost:81/" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.157 Safari/537.36" "-"
172.17.0.1 - - [20/May/2019:00:18:30 +0000] "GET /main.js HTTP/1.1" 200 114749 "http://localhost:81/" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko)
Chrome/74.0.3729.157 Safari/537.36" "-"
172.17.0.1 - - [20/May/2019:00:18:30 +0000] "GET /styles.js HTTP/1.1" 200 1117457 "http://localhost:81/" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.157 Safari/537.36" "-"
172.17.0.1 - - [20/May/2019:00:18:30 +0000] "GET /vendor.js HTTP/1.1" 200 10048515 "http://localhost:81/" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.157 Safari/537.36" "-"
172.17.0.1 - - [20/May/2019:00:18:31 +0000] "GET /assets/logo-white.svg HTTP/1.1" 200 4519 "http://localhost:81/" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML,
like Gecko) Chrome/74.0.3729.157 Safari/537.36" "-"
172.17.0.1 - - [20/May/2019:00:18:31 +0000] "GET /favicon.png HTTP/1.1" 200 997 "http://localhost:81/login" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.157 Safari/537.36" "-"
172.17.0.1 - - [20/May/2019:00:18:35 +0000] "GET /login HTTP/1.1" 404 188 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.157 Safari/537.36" "-"
2019/05/20 00:18:35 [error] 6#6: *4 open() "/usr/share/nginx/html/login" failed (2: No such file or directory), client: 172.17.0.1, server: localhost, request: "GET /login HTTP/1.1", host: "localhost:81"

Any ideas whats going on here?

UPDATE: The actual answer to this lies in the comments of @Rajesh's Answer. The issue is that I was working on /etc/nginx/nginx.conf and I needed to be working on /etc/nginx/conf.d/default.conf

Answer 1

With a refresh on Angular app, we need to tell nginx web server to first look at the index.html file if the requested route exists or not before showing the error page. This is working fine for me:

server {
    listen       80;
    server_name  localhost;

    location / {
        root   /usr/share/nginx/html;
        try_files $uri $uri/ /index.html;
        index  index.html index.htm;
    }

    error_page   500 502 503 504  /50x.html;
    location = /50x.html {
        root   /usr/share/nginx/html;
    }

}