first commit

prebuildfs/usr/sbin/install_packages

@@ -0,0 +1,27 @@
+#!/bin/sh
+# Copyright Broadcom, Inc. All Rights Reserved.
+# SPDX-License-Identifier: APACHE-2.0
+set -eu
+
+n=0
+max=2
+export DEBIAN_FRONTEND=noninteractive
+
+until [ $n -gt $max ]; do
+    set +e
+    (
+      apt-get update -qq &&
+      apt-get install -y --no-install-recommends "$@"
+    )
+    CODE=$?
+    set -e
+    if [ $CODE -eq 0 ]; then
+        break
+    fi
+    if [ $n -eq $max ]; then
+        exit $CODE
+    fi
+    echo "apt failed, retrying"
+    n=$(($n + 1))
+done
+apt-get clean && rm -rf /var/lib/apt/lists /var/cache/apt/archives

prebuildfs/usr/sbin/run-script

@@ -0,0 +1,24 @@
+#!/bin/sh
+# Copyright Broadcom, Inc. All Rights Reserved.
+# SPDX-License-Identifier: APACHE-2.0
+set -u
+
+if [ $# -eq 0 ]; then
+    >&2 echo "No arguments provided"
+    exit 1
+fi
+
+script=$1
+exit_code="${2:-96}"
+fail_if_not_present="${3:-n}"
+
+if test -f "$script"; then
+  sh $script
+
+  if [ $? -ne 0 ]; then
+    exit $((exit_code))
+  fi
+elif [ "$fail_if_not_present" = "y" ]; then
+  >&2 echo "script not found: $script"
+  exit 127
+fi