fix: add test for checking existannce of public/hash.txt file

[ofirc77]

fix: add test for checking existannce of public/hash.txt file

[ofirc77]

@NoamGaash Added comment from previous commit for context:

In short, updated the commit hash in hash.txt in the build.yaml file
this commit will focus on writing test for that feature.

seems like you're testing for the existence of public/hash.txt - and I don't think we should expect this file to be found in this stage because this job is not the same job that created this file.
I do think we want to test that http://localhost:3000/hash.txt returns a text string (mime type text/plain) that is short (less then 100 chars or so).
This test can also be performed locally if you run docker build and docker run, and then navigate to this url in your browser.
also, please consider adding separated commits so it will be easier to follow what have we tried

Updated this commit according to what you asked

[github-actions]

Preview: https://s3.amazonaws.com/noam-gaash.co.il/12792623680/open-bus/289/index.html
Preview Storybook: https://s3.amazonaws.com/noam-gaash.co.il/12792623680/open-bus/289/storybook/index.html
Test Report (if available): 'https://s3.amazonaws.com/noam-gaash.co.il/12792623680/open-bus/1d0f6b6002ec67fdd1fd8c549703e409a0098ef5/test-results/index.html'

[ofirc77]

Updated the test in the validate section. It seems now that it redirects it to the main page again for my opinion ( this is why we have 3100 chars and not less than 100 )
I will try to think on solution while running it locally for that issue.
Please let me know if you have more ideas

[NoamGaash]

Great!
Try to run the image locally and see A) if it has the file inside the public directory and b) if it serve it

[NoamGaash]

Suggested change

	if [ "$mime_type" != "text/html" ]; then
	if [ "$mime_type" != "text/plain" ]; then