fix: Dockerfile to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-ALPINE317-BUSYBOX-6913412
- https://snyk.io/vuln/SNYK-ALPINE317-BUSYBOX-7254940
- https://snyk.io/vuln/SNYK-ALPINE317-BUSYBOX-7254941
- https://snyk.io/vuln/SNYK-ALPINE317-BUSYBOX-7254942
- https://snyk.io/vuln/SNYK-ALPINE317-OPENSSL-6148880

Dockerfile

@@ -1,4 +1,4 @@
-FROM node:18.18-alpine3.17 as builder
+FROM node:20.8.0-alpine3.17 as builder
 
 RUN apk --update add git build-base
 
@@ -16,7 +16,7 @@ COPY /src ./src/
 
 RUN npm run build
 
-FROM node:18.18-alpine3.17
+FROM node:20.8.0-alpine3.17
 
 ADD https://github.com/ufoscout/docker-compose-wait/releases/download/2.7.2/wait /wait
 RUN chmod +x /wait