Fix animdl discovery in Docker runtime

app_support.py

@@ -22,9 +22,24 @@ from uuid import uuid4
 
 
 PROJECT_ROOT = Path(__file__).resolve().parent
-ANI_CLI = os.environ.get("ANI_CLI_BIN") or shutil.which("ani-cli") or "ani-cli"
-ANIPY_CLI = os.environ.get("ANIPY_CLI_BIN") or shutil.which("anipy-cli") or "anipy-cli"
-ANIMDL = os.environ.get("ANIMDL_BIN") or shutil.which("animdl") or "animdl"
+
+
+def configured_cli_command(env_name, executable_name):
+    configured = str(os.environ.get(env_name) or "").strip()
+    if configured:
+        return configured
+    resolved = shutil.which(executable_name)
+    if resolved:
+        return resolved
+    for candidate in (Path("/usr/local/bin") / executable_name, Path("/usr/bin") / executable_name):
+        if candidate.exists() and os.access(candidate, os.X_OK):
+            return str(candidate)
+    return executable_name
+
+
+ANI_CLI = configured_cli_command("ANI_CLI_BIN", "ani-cli")
+ANIPY_CLI = configured_cli_command("ANIPY_CLI_BIN", "anipy-cli")
+ANIMDL = configured_cli_command("ANIMDL_BIN", "animdl")
 APP_NAME = "ani-cli-web"
 VERSION_FILE = PROJECT_ROOT / "VERSION"
 CHANGELOG_FILE = PROJECT_ROOT / "CHANGELOG.md"