✨ Default workflow: no-args runs tidy→fmt→vet→test→build ✨

Replace the service-lifecycle init script with a lean Go-native
default workflow. Running the container with no arguments now
automatically formats, vets, tests, and builds the mounted project.
- rootfs/usr/local/etc/docker/init.d/00-go.sh: stripped from 979
lines of daemon-lifecycle boilerplate to 3 lines that export
CONTAINER_INIT=yes and SERVICE_USES_PID=no, telling the init
framework this is a configuration-only container (no daemon, no
keep-alive loop)
- rootfs/usr/local/bin/go-workflow: new script — runs the canonical
Go workflow in order: go mod tidy → gofmt -w . → go vet ./... →
go test ./... → go build ./...; exits 1 with a clear usage message
if no go.mod is found in /app
- rootfs/usr/local/bin/entrypoint.sh: no-args path in both the init
block and the * case now exec go-workflow instead of __no_exit;
verified: default workflow, explicit commands, sh -c passthrough,
and missing go.mod error all behave correctly
- README.md: document the default workflow prominently; update
one-shot examples; add golangci-lint --timeout note; add tail null
long-running pattern

README.md
rootfs/usr/local/bin/entrypoint.sh
rootfs/usr/local/bin/go-workflow
rootfs/usr/local/etc/docker/init.d/00-go.sh

rootfs/usr/local/bin/entrypoint.sh

@@ -506,9 +506,9 @@ if [ "$START_SERVICES" = "yes" ] || [ -z "$1" ]; then
     echo "$$" >"$ENTRYPOINT_PID_FILE"
     __start_init_scripts "/usr/local/etc/docker/init.d"
     CONTAINER_INIT="${CONTAINER_INIT:-no}"
-    # Only block in monitoring mode when no user command was given
+    # No user command: run default Go workflow instead of blocking
     if [ $# -eq 0 ]; then
-      __no_exit
+      __exec_command go-workflow
       exit $?
     fi
   fi
@@ -643,8 +643,13 @@ procs)
   ;;
 # Launch shell
 */bin/sh | */bin/bash | bash | sh | shell)
+  shell_bin="$(type -P "${1}" 2>/dev/null || echo "/bin/bash")"
   shift 1
-  __exec_command "${@:-/bin/bash -l}"
+  if [ $# -gt 0 ]; then
+    __exec_command "$shell_bin" "$@"
+  else
+    __exec_command "$shell_bin" -l
+  fi
   exit $?
   ;;
 # execute commands
@@ -676,11 +681,8 @@ start)
 # Execute primary command
 *)
   if [ $# -eq 0 ]; then
-    if [ ! -f "$ENTRYPOINT_PID_FILE" ]; then
-      echo "$$" >"$ENTRYPOINT_PID_FILE"
-      [ "$START_SERVICES" = "no" ] && [ "$CONTAINER_INIT" = "yes" ] || __start_init_scripts "/usr/local/etc/docker/init.d"
-    fi
-    __no_exit
+    # No args: run the default Go workflow (tidy → fmt → vet → test → build)
+    __exec_command go-workflow
   else
     __exec_command "$@"
   fi