powershell/PSAvoidUsingDoubleQuotesForConstantString is a PSScriptAnalyzer diagnostic emitted by tally for PowerShell snippets embedded in
Dockerfiles.
Description
Single quotes should be used when the value of a string is constant. A constant string doesn’t contain variables or expressions intended to insert values into the string, such as"$PID-$(hostname)").
This makes the intent clearer that the string is a constant and makes it easier to use some special
characters such as $ within that string expression without needing to escape them.
There are exceptions to that when double quoted strings are more readable. For example, when the
string value itself must contain a single quote or other special characters, such as newline
("`n"), are already being escaped. The rule does not warn in these cases.