Dockerized nginx isn't serving HTML page

Question

Mac OS here, running Docker Version 17.12.0-ce-mac49. I have the following super-simple Dockerfile:

FROM nginx
COPY index.html /usr/share/nginx/html

I create my Docker image:

docker build -t mydocbox .

So far so good, no errors. I then create a container from that image:

docker run -it -p 8080:8080 -d --name mydocbox mydocbox

And I see it running (I have confirmed its running by issuing docker ps as well as SSHing into the box via docker exec -it <containerId> bash and confirming /usr/share/nginx/html/index.html exists)!

When I open a browser and go to http://localhost:8080, I get an empty/blank/nothing-to-see-here screen, not my expected index.html page.

I don't see any errors anywhere and nothing to indicate configuration is bad or that firewalls are causing issues. Any ideas as to what the problem could be or how I could troubleshoot?

Answer 1

See if you can follow this example:

FROM nginx:alpine
COPY default.conf /etc/nginx/conf.d/default.conf
COPY index.html /usr/share/nginx/html/index.html

It uses a default.conf file which does specify the index.html used

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

Change in the default.conf the listening port from 80 to 8080, and EXPOSE it.
Or simply docker run with -p 8080:80 (hostPort:containerPort).