Add Dockerignore file

[agarwalhimanshugaya]

What feature?

currently you write dockerfile but it copy all the things which take so much space in docker which is bad because you copy all the files and nodemodules i can reduce with dockerignore file. Please assign me this issue under Gssoc'24

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[github-actions[bot]]

Thank you for opening an issue! We will look into it ASAP. star the repo if you like it.

[Saurav-Pant]

Go ahead @agarwalhimanshugaya

[agarwalhimanshugaya]

@Saurav-Pant sr can you review my pr and merge it