Force LF line endings for Docker shell scripts

[danielvanza]

Description

• Add text eol=lf rules for docker-entrypoint.sh, process-environment.sh, and setup-ssl.sh so Windows checkouts cannot produce CRLF and break the container entrypoint.
• All three files are already LF in the repository, so this prevents regressions without rewriting history.

Validation

• git check-attr eol text -- docker-entrypoint.sh process-environment.sh setup-ssl.sh — each file reports text: set, eol: lf.
• git -c core.autocrlf=true clone --branch main (pre-fix) yields with CRLF line terminators (25 CRs in docker-entrypoint.sh); the same clone of shell-scripts-lf yields ASCII text (0 CRs).
• docker build -t graph-explorer . → success; docker run -p 8080:80 ... graph-explorer + curl http://localhost:8080/status → OK (HTTP 200); container log shows SSL disabled. Skipping self-signed certificate generation.
• docker exec ge sh -c "tr -cd '\r' < /graph-explorer/docker-entrypoint.sh | wc -c" — 0 carriage returns.
• CRLF-before reproduction: docker build of the pre-fix clone → success, but docker run exits 1 with exec ./docker-entrypoint.sh: no such file or directory and /status is unreachable.
• pnpm checks — passed.
• pnpm test — passed (222 files, 2705 tests).

Related Issues

• Fixes [Bug] exec ./docker-entrypoint.sh: no such file or directory #85[Bug]  #198

Check List

• I confirm that my contribution is made under the terms of the Apache 2.0 license.
• I have verified pnpm checks passes with no errors.
• I have verified pnpm test passes with no failures.
• I have covered new added functionality with unit tests if necessary.
• I have updated documentation if necessary.

[danielvanza]

Quick heads up that the workflows on this one are pending approval, so nothing has run yet. Once they're approved I'll keep an eye on the results. This just pins the three Docker shell scripts to LF to close out #198. Thanks!