Do you have continuous integration system in place (TeamCity or Jenkins or Azure DevOps etc.)?
If it is yes for (2), then follow up question - is there a build configuration in that CI system which builds this project. From description it looks like you have revamped the legacy application using Angular and Sprintboot. In that case your old configurations may not work.
A little more information on the context would help DEVs help you better
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I agree with @bradtaniguchi 's comment - thoughtworks' CI article is best place to start with.
@shrawanttiwari - could you answer following questions?
Do you have source code repo?
Do you have continuous integration system in place (TeamCity or Jenkins or Azure DevOps etc.)?
If it is yes for (2), then follow up question - is there a build configuration in that CI system which builds this project. From description it looks like you have revamped the legacy application using Angular and Sprintboot. In that case your old configurations may not work.
A little more information on the context would help DEVs help you better