feat: Adding Docker support

[mithunsasidharan]

Fixes #50

[SendGridDX]

All committers have signed the CLA.

[mbernier]

I believe that there is an issue with the path here, I got the following error:

Removing intermediate container ffe1fcef3a69
Step 11/14 : COPY entrypoint.sh entrypoint.sh
COPY failed: stat /var/lib/docker/tmp/docker-builder064488478/entrypoint.sh: no such file or directory

[mbernier]

Since this file is in the "docker" directory (this is awesome btw)
can you please make a change to src/test/TestRequiredFilesExist.java to fix the file path for the DockerFile?

line 10 should look like this:

    @Test public void checkDockerExists() {
        boolean dockerExists = new File("./docker/Dockerfile").exists() ||
        new File("./docker/Docker").exists();
        assertTrue(dockerExists);
    }

[mbernier]

If you are interested, we would love the opportunity to talk to you about Hacktoberfest and our API libraries.

Our agenda would be: Explore what you liked and is there anything we can do to improve?

You can grab a time on my calendar that works for you and we can have a chat on Google Hangout or Skype. If you prefer, you can email me using my GitHub username at my company’s domain.

Thank you so much,

Matt Bernier - @mbernier - SendGrid Developer Experience Product Manager
Elmer Thomas - @thinkingserious - SendGrid Developer Experience Engineer
@sendgrid

[mithunsasidharan]

@mbernier : Updated the PR.. can you please check now and let me know.

[mbernier]

Thank you!!

[thinkingserious]

Hello @mithunsasidharan,

Thanks again for the PR!

We appreciate your contribution and look forward to continued collaboration. Thanks!

Team SendGrid DX