Create home directoy along with user

This fixes an issue reported by a customer who was seeing an
error now that the OS has moved to Bookworm with the latest
Python version.

Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>

Author: alexellis

template/python3-flask-debian/Dockerfile

@@ -14,8 +14,9 @@ RUN apt-get -qy update \
     && rm -rf /var/lib/apt/lists/*
 
 # Add non root user
-RUN addgroup --system app && adduser app --system --ingroup app
-RUN mkdir -p /home/app && chown app /home/app
+RUN addgroup --system app \
+    && adduser app --system --ingroup app --home /home/app \
+    && chown app:app /home/app
 
 USER app
 

template/python3-http-debian/Dockerfile

@@ -14,8 +14,9 @@ RUN apt-get -qy update \
     && rm -rf /var/lib/apt/lists/*
 
 # Add non root user
-RUN addgroup --system app && adduser app --system --ingroup app
-RUN mkdir -p /home/app && chown app /home/app
+RUN addgroup --system app \
+    && adduser app --system --ingroup app  --home /home/app \
+    && chown app:app /home/app
 
 USER app