Begineer: docker build for nginx fails

[swapnilpotnis]

Firstly, THANK YOU for taking the efforts to create the repo with such amazing docker examples.

Issue: With respect to the build command as mentioned in https://github.com/ajeetraina/docker101/blob/master/beginners/intro-to-dockerfile-003.md results in error

`**testuser@INPNRLT5487:~/Desktop/docker-cert/docker101/beginners/nginx$ ls nginx1.Dockerfile nginx2.Dockerfile

testuser@INPNRLT5487:~/Desktop/docker-cert/docker101/beginners/nginx$ docker build -t testuser/mynginx . unable to prepare context: unable to evaluate symlinks in Dockerfile path: lstat /home/testuser/Desktop/docker-cert/docker101/beginners/nginx/Dockerfile: no such file or directory** `

I was not really able to find the root cause of the issue as i could find examples over the net having ".Dockerfile" examples.

What did actually worked for me was:

`**testuser@INPNRLT5487:~/Desktop/docker-cert/docker101/beginners/nginx$ docker build -t testuser/mynginx -f nginx1.Dockerfile . Sending build context to Docker daemon 3.072kB Step 1/2 : FROM ubuntu ^C

testuser@INPNRLT5487:~/Desktop/docker-cert/docker101/beginners/nginx$**`

Just in case if this helps: $ docker --version Docker version 19.03.6, build 369ce74a3c

I was going to create a PR for the same but didn't have the access rights as its your repo hence creating an issue to let you guys know about it.