Non-root users cannot bind to ports < 1024. Port 8080 is used by
nginxinc/nginx-unprivileged by default.
Co-Authored-By: Paperclip <noreply@paperclip.ing>
Switch from nginx:stable-alpine to nginxinc/nginx-unprivileged:stable-alpine.
The unprivileged image runs as nginx user (UID 101) on port 8080, satisfying
the runAsNonRoot: true security context in Kubernetes.
Fixes: https://github.com/cartsnitch/infra/issues/65
Co-Authored-By: Paperclip <noreply@paperclip.ing>