feat: Respect the .ae_ignore file when deploying to agent engine

PiperOrigin-RevId: 788052720

Author: yeesian

src/google/adk/cli/cli_deploy.py

@@ -315,8 +315,15 @@ def to_agent_engine(
     shutil.rmtree(agent_src_path)
 
   try:
+    ignore_patterns = None
+    ae_ignore_path = os.path.join(agent_folder, '.ae_ignore')
+    if os.path.exists(ae_ignore_path):
+      click.echo(f'Ignoring files matching the patterns in {ae_ignore_path}')
+      with open(ae_ignore_path, 'r') as f:
+        patterns = [pattern.strip() for pattern in f.readlines()]
+        ignore_patterns = shutil.ignore_patterns(*patterns)
     click.echo('Copying agent source code...')
-    shutil.copytree(agent_folder, agent_src_path)
+    shutil.copytree(agent_folder, agent_src_path, ignore=ignore_patterns)
     click.echo('Copying agent source code complete.')
 
     click.echo('Initializing Vertex AI...')
@@ -341,7 +348,7 @@ def to_agent_engine(
     env_vars = None
     if not env_file:
       # Attempt to read the env variables from .env in the dir (if any).
-      env_file = os.path.join(agent_src_path, '.env')
+      env_file = os.path.join(agent_folder, '.env')
     if os.path.exists(env_file):
       from dotenv import dotenv_values