Delete the comments and preambles the panel found empty

Dockerfile

@@ -1,9 +1,3 @@
-# The merge gate: `docker build .` fails if vet, complexity, formatting or tests
-# fail, and CI runs exactly this. Day-to-day, prefer `docker compose run`
-# (bind-mounts source, no rebuilds). GO_VERSION defaults to the latest stable Go;
-# the lowest supported version builds the `portable` stage, which every supported
-# Go must pass:
-# docker build --build-arg GO_VERSION=1.22.12 --target portable .
 ARG GO_VERSION=1.27.1
 FROM golang:${GO_VERSION} AS portable