fix: Dockerfile to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-ALPINE317-OPENSSL-6032385
- https://snyk.io/vuln/SNYK-ALPINE317-OPENSSL-6032385
- https://snyk.io/vuln/SNYK-ALPINE317-PROCPS-6050238
- https://snyk.io/vuln/SNYK-ALPINE317-PROCPS-6050238

Dockerfile

-FROM ruby:alpine3.17 AS base
+FROM ruby:3-alpine3.17 AS base
 
 ARG RAILS_ROOT=/usr/src/app
 ENV RAILS_ROOT=${RAILS_ROOT}