The supervised `gateway-default` s6 slot runs bare `hermes gateway run`
(no -p) to mean "the root HERMES_HOME profile". But `_apply_profile_override`
falls through its #22502 HERMES_HOME guard for the container root
(/opt/data, whose parent is not `profiles`) and reads the sticky
`active_profile` file. If the user set another profile active (e.g. via
the dashboard), the reserved default gateway gets redirected into that
profile — producing a duplicate gateway for the active profile and no
real default gateway. The profile page and `gateway status` then
correctly report default as "not running" because there genuinely isn't
one.
Guard step 2 (the sticky active_profile fallback) with the existing
HERMES_S6_SUPERVISED_CHILD sentinel that the container run-script already
exports. Supervised named-profile slots pass -p explicitly (step 1, never
reaches step 2); only the bare default slot was affected. Inert outside
the s6 container — the sentinel is never set elsewhere.
Reported in the 'Docker & Profiles & Dashboard' support thread.
Ben Barclay
95715dcb03