fix: throw errors from the Unity CLI in the Windows build command (#38)

Author: EricRibeiro

src/scripts/windows/build.sh

@@ -1,6 +1,6 @@
 #!/bin/false
 # shellcheck shell=bash
-# shellcheck disable=SC2154
+# shellcheck disable=SC2016,SC2154
 
 trap_exit() {
   local exit_status="$?"
@@ -25,13 +25,34 @@ docker exec "$CONTAINER_NAME" powershell "[System.Environment]::SetEnvironmentVa
 docker exec "$CONTAINER_NAME" powershell "[System.Environment]::SetEnvironmentVariable('BUILD_METHOD','$build_method', [System.EnvironmentVariableTarget]::Machine)"
 docker exec "$CONTAINER_NAME" powershell "[System.Environment]::SetEnvironmentVariable('CUSTOM_PARAMS','$custom_parameters', [System.EnvironmentVariableTarget]::Machine)"
 
+build_args=(
+  '-batchmode'
+  '-quit'
+  '-nographics'
+  '-projectPath $Env:PROJECT_PATH'
+  '-buildTarget $Env:BUILD_TARGET'
+  '-customBuildTarget $Env:BUILD_TARGET'
+  '-customBuildName $Env:BUILD_NAME'
+  '-customBuildPath "C:/build/"'
+  '-executeMethod $Env:BUILD_METHOD'
+)
+
+[ -n "$custom_parameters" ] && build_args+=( '$Env:CUSTOM_PARAMS.split()' )
+
 # Build the project
 # Versioning of the project needs work. This is how it's done in the GHA:
 # https://github.com/game-ci/unity-builder/blob/main/src/model/versioning.ts
 set -x
-docker exec "$CONTAINER_NAME" powershell '& "C:\Program Files\Unity\Hub\Editor\*\Editor\Unity.exe" -batchmode -quit -nographics -projectPath $Env:PROJECT_PATH -buildTarget $Env:BUILD_TARGET -customBuildTarget $Env:BUILD_TARGET -customBuildName $Env:BUILD_NAME -customBuildPath "C:/build/" -executeMethod $Env:BUILD_METHOD $Env:CUSTOM_PARAMS.split() -logfile | Out-Host'
+docker exec "$CONTAINER_NAME" powershell "& 'C:\Program Files\Unity\Hub\Editor\*\Editor\Unity.exe' ${build_args[*]} -logfile | Out-Host"
+exit_code="$?"
 set +x
 
+if [ "$exit_code" -ne 0 ]; then
+  printf '%s\n' "Failed to build the project."
+  printf '%s\n' "Please try again, open an issue or reach out to us on Discord."
+  exit "$exit_code"
+fi
+
 # Compress the build folder.
 docker exec "$CONTAINER_NAME" powershell 'tar -czf "C:/$Env:BUILD_NAME-$Env:BUILD_TARGET.tar.gz" -C "C:/build" .'