COCKROACH_ARGS environment variable not working as expected

[DennieDev]

Using COCKROACH_ARGS with flags instead of just a single command results in a failure.
This is due to a fault in /cockroach/cockroach.sh.

Error:

ERROR: unknown command "start --insecure" for "cockroach"

Please describe the issue you observed, and any steps we can take to reproduce it:

To Reproduce

1. Start a docker container using the COCKROACH_ARGS variable as 'start --insecure'

Example:

version: "3.9"
services:
   
  cockroach:
    hostname: "node_{{.Node.Hostname}}"
    image: cockroachdb/cockroach:v23.2.4
    network_mode: host
    environment:
      COCKROACH_ARGS: 'start --insecure'
    deploy:
      replicas: 1
    ports:
      - 26257:26257
      - 26357:26357
      - 18080:8080

Expected behavior
It should just pass the flags as normal instead of matching it all as a single command, this is due to a fault in the /cockroach/cockroach.sh file.

Additional context
The fix is changing:

if [[ -n "$COCKROACH_ARGS" ]]; then
  _main "$COCKROACH_ARGS"
else
  _main "$@"
fi

To:

if [[ -n "$COCKROACH_ARGS" ]]; then
  _main $COCKROACH_ARGS
else
  _main "$@"
fi

Because of the "" it's matching the entire variable as a single command.

Jira issue: CRDB-37892

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[xinhaoz]

Tagged @cockroach-dev-inf given this PR but feel free to reassign if this is not your area of ownership!