Update chown command on Dockerfile

Busybox's version 1.37 `chown` deprecated using USER.GROUP and is now enforcing
the USER:GROUP format.

Signed-off-by: David Negreira <David@otherreality.net>

Author: dnegreira

profile/README.md

@@ -56,7 +56,7 @@ FROM cgr.dev/chainguard/wolfi-base
 ARG version=3.11
 WORKDIR /app
 
-RUN apk add python-${version} && chown -R nonroot.nonroot /app/
+RUN apk add python-${version} && chown -R nonroot:nonroot /app/
 
 USER nonroot