Merge pull request #1942 from duhow/dockerfile

Optimize Dockerfile

Dockerfile

@@ -1,10 +1,16 @@
-FROM python:3.6-slim-stretch
+# syntax=docker/dockerfile:1.4
 
+FROM scratch AS installer
 COPY ./ /var/cache/napalm/
 
-RUN apt-get update \
- && apt-get install -y python-dev python-cffi libxslt1-dev libssl-dev libffi-dev \
- && apt-get autoremove \
- && rm -rf /var/lib/apt/lists/* \
- && pip --no-cache-dir install -U cffi cryptography /var/cache/napalm/ \
- && rm -rf /var/cache/napalm/
+FROM python:3.12-slim-bookworm
+
+RUN --mount=type=bind,from=installer,source=/var/cache/napalm,target=/var/cache/napalm,rw \
+    apt-get update && \
+    apt-get install -y \
+        python3-dev libxslt1-dev libssl-dev libffi-dev && \
+    apt-get autoremove && \
+    rm -rf /var/lib/apt/lists/* && \
+    pip --no-cache-dir install -U cffi cryptography /var/cache/napalm/
+
+ ENTRYPOINT ["napalm"]