Caught migrating a real server: the pod crashlooped with
`.: cannot open /vault/secrets/grafana-creds`, and the reason was in the
generated spec:
args: ["/bin/sh","-c",". /vault/secrets/grafana-creds; exec \"$0\" \"$@\"",
"@leval/mcp-grafana"]
mcpd deliberately maps ContainerSpec.command -> k8s `args` so a package
server keeps its runner image's ENTRYPOINT (`npx -y`, `uvx`). Putting the
sourcing wrapper there meant the pod actually ran
`npx -y /bin/sh -c '...'` — npx trying to resolve a package called
/bin/sh. The agent had rendered the file correctly; nothing ever sourced it.
Adds `ContainerSpec.entrypoint`, which maps to k8s `command` and so
REPLACES the image entrypoint, and has wrapCommand fold that entrypoint
into the argv it returns (`npx -y` / `uvx` for package servers, the
server's own `entrypoint` field for dockerImage servers — already required
at validation for exactly this reason).
Two tests pin it: a wrapped server emits `command` and no `args`; an
unwrapped one still emits `args` and no `command`.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018vybEitX4FykeMatKe5Xki
