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This updates alpine version to 3.7 in sample-functions, gateway and some markdown docas. Signed-off-by: Ivana Yovcheva (VMware) <iyovcheva@vmware.com>
functions/resizer
Use this FaaS function to resize an image with ImageMagick.
Deploy the resizer function
(Make sure you have already deployed FaaS with ./deploy_stack.sh in the root of this Github repository.
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Option 1 - click Create a new function on the FaaS UI
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Option 2 - use the faas-cli (experimental)
# curl -sSL https://get.openfaas.com | sudo sh
# faas-cli -action=deploy -image=functions/resizer -name=resizer \
-fprocess="convert - -resize 50% fd:1"
200 OK
URL: http://localhost:8080/function/resizer
Resize a picture by 50%
Now pick an image such as the included picture of Gordon and use curl or a tool of your choice to send the data to the function. Pipe the result into a new file like this:
$ curl localhost:8080/function/resizer --data-binary @gordon.png > small_gordon.png
Customize the transformation
If you want to customise the transformation then edit the Dockerfile or the fprocess variable and create a new function.
Remove the function
You can remove the function with docker service rm resizer.