fix: Dockerfile to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-ALPINE315-ZLIB-2976173
- https://snyk.io/vuln/SNYK-UPSTREAM-NODE-3326683
- https://snyk.io/vuln/SNYK-UPSTREAM-NODE-5741793
- https://snyk.io/vuln/SNYK-UPSTREAM-NODE-5811867
- https://snyk.io/vuln/SNYK-UPSTREAM-NODE-5843454

Dockerfile

@@ -1,4 +1,4 @@
-FROM node:16.14.0-alpine3.15 AS builder
+FROM node:21.6.1-bookworm-slim AS builder
 ADD . /app
 RUN apk add bash
 RUN apk add --no-cache \
@@ -19,7 +19,7 @@ RUN npm run build
 
 # RUN npm run build
 
-FROM node:16.14.0-alpine3.15
+FROM node:21.6.1-bookworm-slim
 RUN apk add bash
 RUN apk add --no-cache \
         python3 \