From ab4251e4805c943c3d8917c2d6fe8f0db9072b36 Mon Sep 17 00:00:00 2001
From: casjay <git-admin@casjaysdev.pro>
Date: Mon, 27 Jul 2026 16:36:12 -0400
Subject: [PATCH] =?UTF-8?q?=F0=9F=90=9B=20Fix=20sh/bash=20-c=20invocations?=
 =?UTF-8?q?=20losing=20their=20interpreter=20name=20=F0=9F=90=9B?=
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- rootfs/usr/local/bin/entrypoint.sh: the `*/bin/sh | */bin/bash | bash |
  sh | shell)` case branch unconditionally shifted away $1 before calling
  __exec_command "$@", which does a bare `exec "$@"`. For `docker run
  image sh -c 'cmd'` this turned the exec into `exec -c cmd` (command not
  found, exit 127) instead of `exec sh -c 'cmd'` — the interpreter name is
  required as the exec'd program itself, not just a case-match keyword.
  Only shift when $1 is literally "shell" (a keyword, not an executable
  name); "sh"/"bash"/"*/bin/sh"/"*/bin/bash" must be passed through intact.
  Verified `bash -n` passes and `docker run casjaysdev/go:latest sh -c
  "..."` now runs the command instead of erroring. Found while running the
  full functional test pass after the previous START_SERVICES gate fix
  (commit 6de223133cf4).
---
 rootfs/usr/local/bin/entrypoint.sh | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/rootfs/usr/local/bin/entrypoint.sh b/rootfs/usr/local/bin/entrypoint.sh
index 27fc22a..1024cd9 100755
--- a/rootfs/usr/local/bin/entrypoint.sh
+++ b/rootfs/usr/local/bin/entrypoint.sh
@@ -626,9 +626,11 @@ procs)
   [ -n "$ps" ] && printf '%s\n%s\n' "Found the following processes" "$ps" | tr '\n' ' '
   exit $?
   ;;
-# Launch shell
+# Launch shell — do not shift here: "sh -c 'cmd'" / "bash -c 'cmd'" needs the
+# interpreter name kept as argv[0] for __exec_command's `exec "$@"` to work;
+# shifting it away turned "sh -c 'cmd'" into `exec -c cmd` (command not found)
 */bin/sh | */bin/bash | bash | sh | shell)
-  shift 1
+  [ "$1" = "shell" ] && shift 1
   __exec_command "$@"
   exit $?
   ;;