If you've ever used add-ons with your Raspberry Pi before then you'll know they rely on the GPIO pins. Most GPIO libraries need elevated system privileges to access the pins and devices created by the Linux Kernel.
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Control GPIO with Docker Swarm
If you've ever used add-ons with your Raspberry Pi before then you'll know they rely on the GPIO pins. Most GPIO libraries need elevated system privileges to access the pins and devices created by the Linux Kernel.
Full article