Rewrote license activation to use a lock to prevent race-conditions.

unity-command/entrypoint.sh

@@ -1,5 +1,17 @@
 #!/bin/bash
-SERIAL=$1; EMAIL=$2; PASSWORD=$3; COMMAND=$4; UNITY_BUILDER=$5
+# Accept either positional arguments or environment variables
+SERIAL=${1:-$SERIAL}
+EMAIL=${2:-$EMAIL}
+PASSWORD=${3:-$PASSWORD}
+COMMAND=${4:-$COMMAND}
+UNITY_BUILDER=${5:-$UNITY_BUILDER}
+
+# Best-effort cleanup for any Docker lock created by the composite action.
+if [[ -n "$LOCK_NAME" ]]; then
+    echo "Removing Docker lock '$LOCK_NAME'..."
+    docker rmi "$LOCK_NAME" >/dev/null 2>&1 || true
+fi
+
 DEFAULT_ARGS="-quit -logFile -"
 
 rm -rf $HOME/.config/unity3d
@@ -29,7 +41,8 @@ RESULT=$?
 echo "Unity command exited with code: $RESULT"
 echo "::endgroup::"
 
-echo "exitCode=$RESULT" >> "$GITHUB_OUTPUT"
+# Uncomment if movingback to a docker action.
+#echo "exitCode=$RESULT" >> "$GITHUB_OUTPUT"
 
 if [[ "$CATCH_ERRORS" != "true" ]]; then
     exit $RESULT