fix: Dockerfile to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-DEBIAN10-APT-1049974
- https://snyk.io/vuln/SNYK-DEBIAN10-DPKG-2847944
- https://snyk.io/vuln/SNYK-DEBIAN10-FREETYPE-1019582
- https://snyk.io/vuln/SNYK-DEBIAN10-GZIP-2444259
- https://snyk.io/vuln/SNYK-DEBIAN10-LIBTASN16-3061094

Dockerfile

@@ -1,4 +1,4 @@
-FROM nginx:1.17.3
+FROM nginx:1.22.1
 
 RUN mkdir -p /usr/share/nginx/html
 COPY dist/ /usr/share/nginx/html