Getting "Invalid ruleset provided" using ruleset from url

[BrunoVazCosta]

Discussed in #2418

^{Originally posted by BrunoVazCosta March 10, 2023}
Hi everyone, I hope you all are well.

I'm getting an error with my ruleset hosted remotely.

docker run --rm -v ${pwd}/tmp:/usr/src/spectral -e PROXY=http://proxy.company.com.br:8080 docker-registry.company.com.br/devops/spectral:6.6.0 lint -r https://gitlab.cloud.company.com.br/me/api-design-rules/raw/master/oas.yaml openapi-ser-v1.0.0.yaml -v

The error
Error running Spectral! Error #1: Invalid ruleset provided at assertRuleset ../../../snapshot/project/packages/ruleset-migrator/src/validation/index.ts:15 throw new Error('Invalid ruleset provided'); at read ../../../snapshot/project/packages/ruleset-migrator/src/index.ts:25 assertRuleset(ruleset); at processTicksAndRejections node:internal/process/task_queues:96 at async migrateRuleset ../../../snapshot/project/packages/ruleset-migrator/src/index.ts:38 const ruleset = await read(filepath, fs, fetch); at async getRuleset ../../../snapshot/project/packages/cli/src/services/linter/utils/getRuleset.ts:49 const migratedRuleset = await migrateRuleset(rulesetFile, {

For my ruleset I've tried (with --- at the 1st line and without it)
extends: [[spectral:oas]]
extends: [spectral:oas]
extends: "spectral:oas"

Please, could you give me a help?