changed base image and added compose

Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.12-slim-bookworm
+FROM git.atlashorizon.net/atlashorizon/container-base/python:3.12-slim-bookworm
 
 RUN useradd --create-home --uid 1000 --shell /usr/sbin/nologin appuser \
     && mkdir -p /app /etc/cert-portal \