Change the base image in Dockerfile block (nginx:1.17 to nginx:1.24-alpine)

[sinsukehlab]

Why:

nginx:1.17 is vulnerable.

What's being changed:

README.md

• comment: CC-BY 4.0 → MIT
• Dockerfile block: nginx:1.17 → nginx:1.24-alpine
• Add -p 8080:80 to the docker run command

2-add-a-dockerfile.yml

• Verify Dockerfile contents: nginx:1.17 → nginx:1.24-alpine

Check off the following:

• [x] For workflow changes, I have verified the Actions workflows function as expected.
• [x] For content changes, I have reviewed the style guide.

[sinsukehlab]

I have updated the workflow for Step 2.

[sinsukehlab]

The workflow verified https://github.com/sinsukehlab/publish-packages-sinsukehlab/actions/runs/4817443439

[cmwilson21]

@sinsukehlab Thanks for the verification! I'll take a look at this from the content side ✨

[cmwilson21]

@sinsukehlab 👋 - Just added a few minor content edits 👍

Let me know if you accept them and I'll get this merged ✅

[sinsukehlab]

@cmwilson21 Thanks for adding the edits. I have accepted them.

[sinsukehlab]

@cmwilson21 @hectorsector gentle reminder