MSDeploy fails to deploy manually zipped package

Question

Earlier I was building and deploying web project using msbuild.exe

Now I want to modify some files before deploying, so I make a .zip package using msbuild, then unz

Answer 1

Dan Kendall's answer helped me but in the end I didn't need to use 7Zip. I prefer this way because then I don't need to install 7Zip on the build server.

The answer was simple, I just switched from using Zip to Archive Files