Add comment to Create-DockerfileSolutionRestore.ps1 script

src/Create-DockerfileSolutionRestore.ps1

@@ -4,6 +4,12 @@ param (
 
 $outfile = "DockerfileSolutionRestore.txt"
 
+# This script creates the $outfile file, with Dockerfile commands to restore all the packages for the solution,
+# so you can insert them (by hand) into Dockerfiles right before the "COPY . ." line
+# to increase build speed by optimizing the use of docker build images cache.
+
+# This script is only needed when adding or removing projects from the solution.
+
 Write-Output "COPY ""$solution"" ""$solution""" > $outfile 
 
 Add-Content -Path $outfile ""