feat: added CI to build and push docker image #3

[khushalmer03]

Fixes Issue

Closes #3 #4

Changes proposed

• Build and push docker image to improwised/php-base from branch php82

Check List (Check all the applicable boxes)

• My code follows the code style of this project.
• All new and existing tests passed.
• This PR does not contain plagiarized content.
• The title of my pull request is a short description of the requested changes.

Note to reviewer

@deltasquare4 Please add docker credentials in secrets and variables -> actions -> DOCKER_USERNAME and DOCKER_PASSWORD

[deltasquare4]

@khushalmer03 You should be able to set the secrets yourself now. LGTM.

[khushalmer03]

@khushalmer03 You should be able to set the secrets yourself now. LGTM.

I still don't have rights to add secrets, only someone with admin rights can do it?

[deltasquare4]

@khushalmer03 You should be able to set the secrets yourself now. LGTM.

I still don't have rights to add secrets, only someone with admin rights can do it?

Now you do.