Add OpenFaaS Clear Linux based python3 template

Signed-off-by: Qi Zheng <qi.zheng@intel.com>

FaaS/OpenFaaS/template/python3-clearlinux/Dockerfile

@@ -0,0 +1,46 @@
+FROM openfaas/classic-watchdog:0.18.1 as watchdog
+
+FROM clearlinux/python:3
+
+ARG swupd_args
+
+COPY --from=watchdog /fwatchdog /usr/bin/fwatchdog
+RUN chmod +x /usr/bin/fwatchdog
+
+WORKDIR /root/
+
+COPY index.py           .
+# pip install python packages if required
+COPY requirements.txt   .
+RUN pip install -r requirements.txt
+
+# install bundles if required
+# PLEASE input bundle line by line
+COPY bundles.txt  .
+RUN for bundle in $(cat bundles.txt); do \
+        swupd bundle-add $bundle $swupd_args; \
+    done
+
+RUN mkdir -p function
+RUN touch ./function/__init__.py
+WORKDIR /root/function/
+# pip install python packages if required
+COPY function/requirements.txt  .
+RUN pip install -r requirements.txt
+
+# install bundles if required
+# PLEASE input bundle line by line
+COPY function/bundles.txt  .
+RUN for bundle in $(cat bundles.txt); do \
+        swupd bundle-add $bundle $swupd_args; \
+    done
+
+WORKDIR /root/
+COPY function           function
+
+ENV fprocess="python3 index.py"
+EXPOSE 8080
+
+HEALTHCHECK --interval=3s CMD [ -e /tmp/.lock ] || exit 1
+
+CMD ["fwatchdog"]