set python version for octoprint image; add runtime packages for octoprint

docker/octoprint/Dockerfile

@@ -1,5 +1,7 @@
+ARG PYTHON_VERSION=3.9
+
 ## Install OctoPrint and Plugins in venv
-FROM python:3 as build
+FROM python:${PYTHON_VERSION} as build
 
 ARG VERSION=1.7.2
 
@@ -10,7 +12,7 @@ RUN python -m venv venv \
  && venv/bin/pip install -r plugins.txt
 
 ## Runtime Image
-FROM python:3-slim as run
+FROM python:${PYTHON_VERSION}-slim as run
 
 WORKDIR /opt
 COPY --from=build /opt/venv venv
@@ -30,4 +32,4 @@ RUN groupadd octoprint --gid 1000 \
  EXPOSE 5000
  VOLUME ["/opt/run", "/opt/cfg"]
  ENTRYPOINT ["/opt/venv/bin/octoprint", "serve"]
- CMD ["-b", "/opt/cfg"]
+ CMD ["-b", "/opt/cfg"]

docker/octoprint/apt.txt

@@ -1,5 +1,5 @@
-# FilamentManager
-psycopg2
-
 # PrusaSlicerThumbnails
-libjpeg62-turbo
+libopenjp2-7
+libjpeg62-turbo
+libtiff5
+libxcb1

scripts/build-images.sh

@@ -1,7 +1,12 @@
 #!/bin/bash
 
-## https://www.stereolabs.com/docs/docker/building-arm-container-on-x86/
+## Setup for building multiplatform images
+##
+## apt install qemu-user-static
 ## docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
+## docker buildx create --use --name cross
+## docker buildx inspect --bootstrap
+## docker buildx build --platform linux/amd64,linux/arm/v7 -t octoprint:latest --target run .
 
 set -e