fix: Dockerfile to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-ALPINE319-BUSYBOX-6913413
- https://snyk.io/vuln/SNYK-ALPINE319-BUSYBOX-6928846
- https://snyk.io/vuln/SNYK-ALPINE319-BUSYBOX-6928847
- https://snyk.io/vuln/SNYK-UPSTREAM-NODE-7430900
- https://snyk.io/vuln/SNYK-UPSTREAM-NODE-7430905

Dockerfile

@@ -1,7 +1,7 @@
 #####################
 ### builder image ###
 
-FROM node:20.12.2-alpine as builder
+FROM node:20.18-alpine as builder
 
 ARG USER_ID
 ARG GROUP_ID