LINTER_RULES_PATH configuration does not work with Lychee

[andrewvaughan]

Describe the bug
Regardless of how LINTER_RULES_PATH is configured in .mega-linter.yml, if the Lychee config files are not in the project root, both .lycheeignore and lychee.toml have no effect, even though Megalinter says they were found correctly.

To Reproduce
Steps to reproduce the behavior:

1. Place Lychee lint configurations in a directory called .config/linters
2. Set LINTER_RULES_PATH: .config/linters in .mega-linter.yml
3. Add megalinter\.io to .config/linters/.lycheeignore
4. Run a Lychee-containing lint

Expected behavior
The megalinter.io links should be ignored, as configured. This is not the case, even though Megalinter says it has found the configuration files:

❌ Linted [SPELL] files with [lychee]: Found 3 error(s) - (151.08s)
- Using [lychee v0.13.0] https://megalinter.io/7.2.1/descriptors/spell_lychee
- MegaLinter key: [SPELL_LYCHEE]
- Rules config: [/.config/linters/lychee.toml]
- Ignore file: [/.config/linters/.lycheeignore]
- Number of files analyzed: [9]
--Error detail:
✗ [404] https://megalinter.io/configuration/ | Failed: Network error: Not Found
✗ [404] https://megalinter.io/configuration/ | Failed: Network error: Not Found
✗ [404] https://megalinter.io/flavors/ | Failed: Network error: Not Found
📝 Summary
---------------------
🔍 Total...........19
✅ Successful......16
⏳ Timeouts.........0
🔀 Redirected.......0
👻 Excluded.........0
❓ Unknown..........0
🚫 Errors...........3

Errors in .github/workflows/mega-linter.yml
✗ [404] https://megalinter.io/flavors/ | Failed: Network error: Not Found
✗ [404] https://megalinter.io/configuration/ | Failed: Network error: Not Found

Errors in .mega-linter.yml
✗ [404] https://megalinter.io/configuration/ | Failed: Network error: Not Found

These links are appropriately ignored if the files are placed in the project root, however:

✅ Linted [SPELL] files with [lychee] successfully - (150.74s)
- Using [lychee v0.13.0] https://megalinter.io/7.2.1/descriptors/spell_lychee
- MegaLinter key: [SPELL_LYCHEE]
- Rules config: [/lychee.toml]
- Ignore file: [/.lycheeignore]
- Number of files analyzed: [9]

It seems that lychee.toml has the same problem, as no configuration changes take effect unless the file is in the project root.

[nvuillam]

@andrewvaughan that's very strange.... please can you run MegaLinter with LOG_LEVEL: DEBUG so the log will output the exact lychee CLI which is run, to check if the options are sent correctly ?

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