When you try to deploy firebase function but got the error with text

Error PEM routines:PEM_read_bio:no start line:Expecting: ANY PRIVATE KEY that your private key has incorrect encoding.

Short list with commands for docker in Linux. See table. If you need more details or you have suggestion – please add comment)

Just install i2c-tools. It’s a package with utilities for work with i2c bus in Linux.

If your service (url) is accessible and all need headers set but nginx returned 502 error – try to enable SNI. It can be very actual for reverse proxy AWS services (API Gateway, CloudFront and etc)