Make script work from outside docker

Author: thomasleplus

openid-connect-provider-debugger/bump-apk-versions.sh

@@ -1,27 +1,35 @@
-#!/bin/ash
+#!/bin/sh
 # shellcheck shell=dash
 
 set -euo pipefail
 
-cd "$(\dirname "$0")"
+cd "$(\dirname "${0}")"
 
-\apk update
+if [ -f /.dockerenv ]; then
 
-\apk add perl
+	\apk update
 
-u=$(\apk -u list | \tr '\n' '|')
+	\apk add perl
 
-\sed -e :a -e '/\\$/N; s/\\\n//; ta' Dockerfile | \grep -o -e 'apk[^\&\;]*add[^\&\;]*' | \grep -o -e '[^ ]*=[^ ]*' | while IFS= \read -r l; do
-	p="${l%=*}"
-	v1="${l#*=}"
-	v="$(\echo "|${u}" | \grep -o -e "\|${p}-[^\|]*upgradable from: ${p}-${v1}" || true)"
-	if [ -z "${v}" ]; then
-		continue
-	fi
-	n=$(($(\echo -n "${p}" | wc -c) + 2))
-	v2="$(\echo "${v}" | \cut -d ' ' -f 1 | \cut -c ${n}-)"
-	if [ -n "${v2}" ] && [ "${v2}" != "${v1}" ]; then
-		\echo "${p} ${v1} -> ${v2}"
-		\perl -i -p -e "s|\Q${l}\E|${p}=${v2}|g" Dockerfile
-	fi
-done
+	u=$(\apk -u list | \tr '\n' '|')
+
+	\sed -e :a -e '/\\$/N; s/\\\n//; ta' Dockerfile | \grep -o -e 'apk[^\&\;]*add[^\&\;]*' | \grep -o -e '[^ ]*=[^ ]*' | while IFS= \read -r l; do
+		p="${l%=*}"
+		v1="${l#*=}"
+		v="$(\echo "|${u}" | \grep -o -e "\|${p}-[^\|]*upgradable from: ${p}-${v1}" || true)"
+		if [ -z "${v}" ]; then
+			continue
+		fi
+		n=$(($(\echo -n "${p}" | wc -c) + 2))
+		v2="$(\echo "${v}" | \cut -d ' ' -f 1 | \cut -c ${n}-)"
+		if [ -n "${v2}" ] && [ "${v2}" != "${v1}" ]; then
+			\echo "${p} ${v1} -> ${v2}"
+			\perl -i -p -e "s|\Q${l}\E|${p}=${v2}|g" Dockerfile
+		fi
+	done
+
+else
+
+	\docker run --pull always --rm -t --user root -v "$(pwd):/opt/bump" "leplusorg/${PWD##*/}:main" /opt/bump/"$(\basename "${0}")"
+
+fi