multi stage build Dockerfile for python wheel

Dockerfile

@@ -1,17 +1,17 @@
-# build the tube archivist image from default python slim image
+# multi stage to build tube archivist
+# first stage to build python wheel, copy into final image
 
-FROM python:3.10.4-slim-bullseye
+
+# First stage to build python wheel
+FROM python:3.10.4-slim-bullseye AS builder
 ARG TARGETPLATFORM
-ARG INSTALL_DEBUG
 
-ENV PYTHONUNBUFFERED 1
+RUN apt-get update
+RUN apt-get install -y --no-install-recommends build-essential gcc curl
 
-# install distro packages needed
-RUN apt-get clean && apt-get -y update && apt-get -y install --no-install-recommends \
-    build-essential \
-    nginx \
-    atomicparsley \
-    curl && rm -rf /var/lib/apt/lists/*
+# install requirements
+COPY ./tubearchivist/requirements.txt /requirements.txt
+RUN pip install --user -r requirements.txt
 
 # get newest patched ffmpeg and ffprobe builds for amd64 fall back to repo ffmpeg for arm64
 RUN if [ "$TARGETPLATFORM" = "linux/amd64" ] ; then \
@@ -27,11 +27,31 @@ RUN if [ "$TARGETPLATFORM" = "linux/amd64" ] ; then \
         apt-get -y update && apt-get -y install --no-install-recommends ffmpeg && rm -rf /var/lib/apt/lists/* \
     ; fi
 
+# build final image
+FROM python:3.10.4-slim-bullseye as tubearchivist
+
+ARG TARGETPLATFORM
+ARG INSTALL_DEBUG
+
+ENV PYTHONUNBUFFERED 1
+
+# copy build requirements
+COPY --from=builder /root/.local /root/.local
+COPY --from=builder /usr/bin/ffmpeg /usr/bin/ffmpeg
+COPY --from=builder /usr/bin/ffprobe /usr/bin/ffprobe
+ENV PATH=/root/.local/bin:$PATH
+
+# install distro packages needed
+RUN apt-get clean && apt-get -y update && apt-get -y install --no-install-recommends \
+    nginx \
+    atomicparsley \
+    curl && rm -rf /var/lib/apt/lists/*
+
 # install debug tools for testing environment
 RUN if [ "$INSTALL_DEBUG" ] ; then \
         apt-get -y update && apt-get -y install --no-install-recommends \
         vim htop bmon net-tools iputils-ping procps \
-        && pip install --no-cache-dir ipython --src /usr/local/src \
+        && pip install --user ipython \
     ; fi
 
 # make folders
@@ -39,12 +59,6 @@ RUN mkdir /cache
 RUN mkdir /youtube
 RUN mkdir /app
 
-# install python dependencies
-COPY ./tubearchivist/requirements.txt /requirements.txt
-RUN pip install --upgrade pip && \
-    pip install --upgrade setuptools && \
-    pip install --no-cache-dir -r requirements.txt --src /usr/local/src
-
 # copy config files
 COPY docker_assets/nginx.conf /etc/nginx/sites-available/default