Add docker support

[ga-lep]

Pull request checklist

Please check if your PR fulfills the following requirements:

• Tested the changes
• Build (/path/to/php cli.php cmd=build) was run locally and any changes were pushed

Pull request type

Please check the type of change your PR introduces:

• Bugfix
• Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Other (please describe):

What is the current behavior?

Issue Number: #826

What is the new behavior?

• You can build a docker image for this project (based on PHP 7.4 and Apache 2)
• You can use the provided docker-compose.yml as a template or for testing during the development phases

Does this introduce a breaking change?

• Yes
• No

Docs need to be updated?

• Yes
• No

Other information

Semgrep analysis :

galep@laptop:~/Projects/Open-Web-Analytics$ semgrep --config "p/Dockerfile"
Fetching rules from https://semgrep.dev/registry.

Scanning across multiple languages:
     dockerfile | 31 rules × 1 file 
    <multilang> |  2 rules × 1 file 

  100%|████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████|2/2 tasks

Some files were skipped or only partially analyzed.
  Scan was limited to files tracked by git.
  Scan skipped: 19 files matching .semgrepignore patterns
  For a full list of skipped files, run semgrep with the --verbose flag.

(need more rules? `semgrep login` for additional free Semgrep Registry rules)

Ran 33 rules on 1 file: 0 findings.
If Semgrep missed a finding, please send us feedback to let us know!
  $ semgrep shouldafound --help

[christianhuth]

Is anybody working on this?

[rlaiola]

Any update on this?

[iYoungblood]

I created a docker version: https://hub.docker.com/r/iyoungblood/open-web-analytics

With that said, please test it as my trackers are not working. I think it has to do with my firewall or connectivity as the JS nor the wordpress plugin is working. Let me know what you find.