Fix #18110: Allow serving UI under a subpath

[harshach]

Describe your changes:

Fixes #18110

I worked on ... because ...

Type of change:

• [ ] Bug fix
• [ ] Improvement
• [ ] New feature
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] Documentation

Checklist:

• [x] I have read the CONTRIBUTING document.
• [ ] My PR title is Fixes <issue-number>: <short explanation>
• [ ] I have commented on my code, particularly in hard-to-understand areas.
• [ ] For JSON Schema changes: I updated the migration scripts or explained why it is not needed.

[chirag-madlani]

@harshach I have added some changes to fix path issue from UI side and also serve modified Index.html using OpenMetadataAssetServlet with help of @mohityadav766 can you review backend changes once?

[mohityadav766]

@harshach I have added some changes to fix path issue from UI side and also serve modified Index.html using OpenMetadataAssetServlet with help of @mohityadav766 can you review backend changes once?

They need improvement @chirag-madlani , they were just to unblock you we need to refactor those a bit

[github-actions[bot]]

Jest test Coverage

UI tests summary

Lines	Statements	Branches	Functions
	63.47% (44813/70609)	38.42% (17935/46683)	42.99% (5332/12402)

[sonarqubecloud[bot]]

Quality Gate passed for 'open-metadata-ui'

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[sonarqubecloud[bot]]

Quality Gate passed for 'open-metadata-ingestion'

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[loringit]

Folks, do you need any help on this? I really need this PR, so I'm willing to help. Can somebody please guide me? Thank you!

[sonarqubecloud[bot]]

Quality Gate passed for 'open-metadata-ui'

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[buddzbuddy]

hi guys, i followed this issue and found some error that if use deployed version it doesn't work properly, I mean half of UI uses basePath env-variable, see below

[harshach]

@buddzbuddy thanks for pointing the issue, do you want to fix and open a PR?

[buddzbuddy]

@harshach yes sure I'd love it!