Ci/docker

[tom-rm-meyer-ISST]

Description

The docker files used hard-wired addresses for common environments. Both, frontend and backend, can now use environment variables instead:

• ci: Dockerfile for frontend uses substring mechanism to update environment variables in built files
• ci: Dockerfile for frontend uses nginx unpriviledged
• ci: Dockerfile for backend now can use environment variables for application.properties
• fix: application.properties were outdated.
• ci: added docker-compose for both
• docs: updated INSTALL.mds

Pre-review checks

Please ensure to do as many of the following checks as possible, before asking for committer review:

• DEPENDENCIES are up-to-date. Dash license tool. Committers can open IP issues for restricted libs.
• Copyright and license header are present on all affected files

[github-advanced-security]

KICS found more than 10 potential problems in the proposed changes. Check the Files changed tab for more details.

[mhellmeier]

Remember to update the DEPENDENCIES_BACKEND. Based on the pipeline, the file isn't up to date.

[tom-rm-meyer-ISST]

Updated dependency file using full scope

[mhellmeier]

LGTM, since the failed quality check pipeline is addressed in eclipse-tractusx/sig-infra#230