Docker command fails for some unity passwords in Github Actions

**Bug description**

When running the github action to build a unity project, the password can be seen in clear text in the debug output. Unlike the other values, it is not obfuscated. The docker command fails with "docker run" requires at least 1 argument, possibly due to the password not being properly escaped.

**How to reproduce**

Use a password with special characters, such as \

**Expected behavior**

The password is obfuscated and the command runs.