fix: Dockerfile to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-ALPINE311-FREETYPE-1019647
- https://snyk.io/vuln/SNYK-ALPINE311-APKTOOLS-1534687
- https://snyk.io/vuln/SNYK-ALPINE311-OPENSSL-1569451
- https://snyk.io/vuln/SNYK-ALPINE311-OPENSSL-1569451
- https://snyk.io/vuln/SNYK-ALPINE311-ZLIB-2977081

Dockerfile

@@ -14,7 +14,7 @@ ENV PATH /etc/poetry/bin/:$PATH
 RUN poetry install
 RUN make run 
 
-FROM nginx:1.17-alpine
+FROM nginx:1.23.2-alpine
 
 COPY --from=builder /src/_build /www
 COPY vhost.conf /etc/nginx/conf.d/default.conf