Description of problem

A surprising change of behavior happened between v0.25.4 and v0.26.3

How reproducible

Prior to v0.26.3, I could inject an env var like this:

dokku config:set my_app VAR='$123*&456$'

And my app would indeed access VAR as $123*&456$

Upgrading to 0.26 caused VAR to be truncated as: *&456$. Note that this value was set months ago so this caused a production failure for me.

Furthermore, if i run this command on 0.26:

dokku config:set my_app VAR='$123'

Then other completely unrelated config values get interpolated

# I'm in my container here
env | grep VAR
VAR=--env=API=AAA

By using a leading backslash, I'm able to once again feed in the proper values to my app

dokku config:set my_app VAR='\$123'

# I'm in my container here
env | grep VAR
VAR=$123

I wouldn't think this change of behavior was intended (surprising!)

It seems $ gets evaluated by the shell somehow.

Let me know if you need more info