Changed to python slim image

Dockerfile

@@ -1,5 +1,7 @@
 ARG ARCH=
-FROM ${ARCH}ubuntu:20.04
+FROM ${ARCH}python:3.12.0-slim-bookworm as builder
+
+WORKDIR /enviroplus
 
 RUN ln -fs /usr/share/zoneinfo/Europe/London /etc/localtime
 
@@ -14,6 +16,15 @@ COPY requirements.txt .
 
 RUN pip3 install -r requirements.txt
 
+FROM ${ARCH}python:3.12.0-slim-bookworm
+
+WORKDIR /enviroplus
+
+# Make sure you update Python version in path
+COPY --from=builder /usr/local/lib/python3.12/site-packages /usr/local/lib/python3.12/site-packages
+
 COPY enviroplus_exporter.py .
 
 CMD python3 enviroplus_exporter.py --bind=0.0.0.0 --port=8000
+
+# ENTRYPOINT [ "python3", "enviroplus_exporter.py", "--bind=0.0.0.0", "--port=8000" ]