just-crop-it using OpenFaaS
Based on a chat with @egsy :)
Happy International Womens Day!
Install OpenFaaS
Installed OpenFaaS locally. Instructions here : https://github.com/openfaas/faas
Cloned https://github.com/egsy/just-crop-it.git
Created the OpenFaaS framework for just-crop-it
faas new --lang dockerfile just-crop-it --prefix egsy
This creates a .yml file and a directory called just-crop-it.
Make the code Serverless
Copy the copy.py file and an example .jpg into just-crop-it directory.
Edit just-crop-it/Dockerfile to install python3 py3-requests and copies in both the copy.py script and example .jpg.
Dockerfile example :
FROM alpine:3.8
RUN mkdir -p /home/app
RUN apk --no-cache add curl python3 py3-requests \
&& echo "Pulling watchdog binary from Github." \
&& curl -sSL https://github.com/openfaas/faas/releases/download/0.9.14/fwatchdog > /usr/bin/fwatchdog \
&& chmod +x /usr/bin/fwatchdog \
&& cp /usr/bin/fwatchdog /home/app \
&& apk del curl --no-cache
# Add non root user
RUN addgroup -S app && adduser app -S -G app
RUN chown app /home/app
WORKDIR /home/app
USER app
COPY original/IWD2019.jpg /home/app/original/IWD2019.jpg
ADD crop.py /home/app/crop.py
# Populate example here - i.e. "cat", "sha512sum" or "node index.js"
ENV fprocess="xargs python3 /home/app/crop.py"
# Set to true to see request in function logs
ENV write_debug="false"
EXPOSE 8080
HEALTHCHECK --interval=3s CMD [ -e /tmp/.lock ] || exit 1
CMD [ "fwatchdog" ]
Build the image
faas build -f just-crop-it.yml
Deploy
faas deploy -f just-crop-it.yml
Trigger the copy serverless function
echo -n "" | faas invoke just-crop-it