Allow resizing of images

sample-functions/ResizeImageMagick/.gitignore

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+small_gordon.png

sample-functions/ResizeImageMagick/Dockerfile

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+FROM v4tech/imagemagick
+
+ADD https://github.com/alexellis/faas/releases/download/0.5.2-alpha/fwatchdog /usr/bin
+RUN chmod +x /usr/bin/fwatchdog
+
+ENV fprocess "convert - -resize 50% fd:1"
+
+EXPOSE 8080
+
+CMD [ "/usr/bin/fwatchdog"]

sample-functions/ResizeImageMagick/README.md

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+## functions/resizer
+
+To resize an image with ImageMagick do the following:
+
+**Create your function on the FaaS UI or via `curl`**
+
+```
+$ curl -s --fail localhost:8080/system/functions -d '{"service": "stronghash", "image": "functions/alpine", "envProcess": "sha512sum", "network": "func_functions"}'
+```
+
+
+**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 and create a new image.
+
+

sample-functions/ResizeImageMagick/build.sh

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+#!/bin/sh
+
+docker build -t functions/resizer .
+
+echo Built functions/resizer
+