style: quote vars to prevent globbing and word splitting

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

Author: 2 people

entrypoint.sh

@@ -2,5 +2,5 @@
 
 source "/src/.env"
 
-htpasswd -c -B -b /etc/squid/htpasswd ${P001_USER} ${P001_PASS}
+htpasswd -c -B -b /etc/squid/htpasswd "${P001_USER}" "${P001_PASS}"
 squid -f /etc/squid/squid.conf -NYCd 1