slim down moonraker image

docker-compose.yaml

@@ -24,6 +24,7 @@ services:
     build:
       dockerfile: moonraker.Dockerfile
       context: .
+      target: moonraker
     container_name: moonraker
     restart: unless-stopped
     volumes:

moonraker.Dockerfile

@@ -1,11 +1,21 @@
-FROM python:3
+## Get Code and Build venv
+FROM python:3 as build
 
 ARG REPO=https://github.com/Arksine/moonraker
 ARG VERSION=master
 
 WORKDIR /opt
 
-## Install Requirements
+RUN git clone ${REPO} moonraker \
+ && cd moonraker \
+ && git checkout ${VERSION}
+
+RUN python -m venv venv \
+ && venv/bin/pip install -r moonraker/scripts/moonraker-requirements.txt
+
+## Runtime Image
+FROM python:3-slim as moonraker
+
 RUN apt update \
  && apt install -y \
       libopenjp2-7 \
@@ -15,27 +25,21 @@ RUN apt update \
       libssl-dev \
       liblmdb0 \
       libsodium-dev \
-      zlib1g-dev
+      zlib1g-dev \
+  && apt clean
 
-## Download moonraker
-RUN git clone ${REPO} moonraker \
- && cd moonraker \
- && git checkout ${VERSION}
+WORKDIR /opt
+COPY --from=build /opt/moonraker ./moonraker
+COPY --from=build /opt/venv ./venv
 
-## Setup Python
-RUN pip install -r moonraker/scripts/moonraker-requirements.txt
-
-## Create Direcories
 RUN mkdir run cfg gcode db
-
-## User & Permissions
 RUN groupadd moonraker --gid 1000 \
  && useradd moonraker --uid 1000 --gid moonraker \
  && usermod moonraker --append --groups dialout \
- && chown -R moonraker:moonraker moonraker run cfg gcode db
+ && chown -R moonraker:moonraker /opt/*
 
 ## Start Klippy
 USER moonraker
-ENTRYPOINT ["python"]
+ENTRYPOINT ["/opt/venv/bin/python"]
 CMD ["moonraker/moonraker/moonraker.py", "-c", "cfg/moonraker.cfg"]