Use my private registry for the build

Signed-off-by: René Jochum <rene@jochum.dev>

Dockerfile

@@ -1,5 +1,5 @@
 # Build public with hugo
-FROM jguyomard/hugo-builder:latest
+FROM registry.jochum.dev/jguyomard/hugo-builder:latest
 
 COPY . /build
 
@@ -8,7 +8,7 @@ WORKDIR /build
 RUN hugo -b https://rene.jochum.dev -v -t persona
 
 # Copy to a nginx container
-FROM nginx:1.19.2-alpine
+FROM registry.jochum.dev/library/nginx:1.19.2-alpine
 
 LABEL maintainer="René Jochum <rene@jochum.dev>"