fix: Dockerfile to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-ALPINE318-EXPAT-6241039
- https://snyk.io/vuln/SNYK-ALPINE318-EXPAT-6241040
- https://snyk.io/vuln/SNYK-ALPINE318-LIBXML2-6245694

Dockerfile

@@ -1,4 +1,4 @@
-FROM nginx:1.25.3-alpine3.18
+FROM nginx:alpine
 
 ARG VERSION=0.0.0
 ENV VERSION=${VERSION}