Changed crystal template, picked latest flask one

template/python3-flask/Dockerfile

@@ -0,0 +1,63 @@
+ARG PYTHON_VERSION=3.11
+FROM --platform=${TARGETPLATFORM:-linux/amd64} ghcr.io/openfaas/of-watchdog:0.9.10 as watchdog
+FROM --platform=${TARGETPLATFORM:-linux/amd64} python:${PYTHON_VERSION}-alpine as build
+
+COPY --from=watchdog /fwatchdog /usr/bin/fwatchdog
+RUN chmod +x /usr/bin/fwatchdog
+
+ARG ADDITIONAL_PACKAGE
+# Alternatively use ADD https:// (which will not be cached by Docker builder)
+
+RUN apk --no-cache add openssl-dev ${ADDITIONAL_PACKAGE}
+
+# Add non root user
+RUN addgroup -S app && adduser app -S -G app
+RUN chown app /home/app
+
+USER app
+
+ENV PATH=$PATH:/home/app/.local/bin
+
+WORKDIR /home/app/
+
+COPY --chown=app:app index.py           .
+COPY --chown=app:app requirements.txt   .
+
+USER root
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Build the function directory and install any user-specified components
+USER app
+
+RUN mkdir -p function
+RUN touch ./function/__init__.py
+WORKDIR /home/app/function/
+COPY --chown=app:app function/requirements.txt	.
+RUN pip install --no-cache-dir --user -r requirements.txt
+
+#install function code
+USER root
+
+COPY --chown=app:app function/   .
+
+
+FROM build as test
+ARG TEST_COMMAND=tox
+ARG TEST_ENABLED=true
+RUN [ "$TEST_ENABLED" = "false" ] && echo "skipping tests" || eval "$TEST_COMMAND"
+
+FROM build as ship
+WORKDIR /home/app/
+
+#configure WSGI server and healthcheck
+USER app
+
+ENV fprocess="python index.py"
+
+ENV cgi_headers="true"
+ENV mode="http"
+ENV upstream_url="http://127.0.0.1:5000"
+
+HEALTHCHECK --interval=5s CMD [ -e /tmp/.lock ] || exit 1
+
+CMD ["fwatchdog"]