feat: Re-use Docker container for code execution

- Create a unique container name based on agent ID
- Check if the container with the name exists, otherwise create a new container
- If the container is not running, start it; otherwise, restart it
- Execute the code in the container
- Return the output of the code execution

This change enables reusing the same container for consecutive code execution commands, allowing for iterative changes to the execution environment.

Note: This change also includes handling the case where the Docker image is not found locally by pulling it from Docker Hub. The image used in this case is "python:3-alpine".

autogpts/autogpt/autogpt/commands/execute_code.py

@@ -10,7 +10,7 @@
 from tempfile import NamedTemporaryFile
 
 import docker
-from docker.errors import DockerException, ImageNotFound
+from docker.errors import DockerException, ImageNotFound, NotFound
 from docker.models.containers import Container as DockerContainer
 
 from autogpt.agents.agent import Agent
@@ -135,58 +135,75 @@ def execute_python_file(
 
     logger.debug("AutoGPT is not running in a Docker container")
     try:
+        assert agent.state.agent_id, "Need Agent ID to attach Docker container"
+
         client = docker.from_env()
         # You can replace this with the desired Python image/version
         # You can find available Python images on Docker Hub:
         # https://hub.docker.com/_/python
         image_name = "python:3-alpine"
+        container_is_fresh = False
+        container_name = f"{agent.state.agent_id}_sandbox"
         try:
-            client.images.get(image_name)
-            logger.debug(f"Image '{image_name}' found locally")
-        except ImageNotFound:
-            logger.info(
-                f"Image '{image_name}' not found locally, pulling from Docker Hub..."
-            )
-            # Use the low-level API to stream the pull response
-            low_level_client = docker.APIClient()
-            for line in low_level_client.pull(image_name, stream=True, decode=True):
-                # Print the status and progress, if available
-                status = line.get("status")
-                progress = line.get("progress")
-                if status and progress:
-                    logger.info(f"{status}: {progress}")
-                elif status:
-                    logger.info(status)
-
-        logger.debug(f"Running {file_path} in a {image_name} container...")
-        container: DockerContainer = client.containers.run(
-            image_name,
+            container: DockerContainer = client.containers.get(container_name)  # type: ignore
+        except NotFound:
+            try:
+                client.images.get(image_name)
+                logger.debug(f"Image '{image_name}' found locally")
+            except ImageNotFound:
+                logger.info(
+                    f"Image '{image_name}' not found locally, pulling from Docker Hub..."
+                )
+                # Use the low-level API to stream the pull response
+                low_level_client = docker.APIClient()
+                for line in low_level_client.pull(image_name, stream=True, decode=True):
+                    # Print the status and progress, if available
+                    status = line.get("status")
+                    progress = line.get("progress")
+                    if status and progress:
+                        logger.info(f"{status}: {progress}")
+                    elif status:
+                        logger.info(status)
+
+            logger.debug(f"Creating new {image_name} container...")
+            container: DockerContainer = client.containers.run(
+                image_name,
+                ["sleep", "60"],  # Max 60 seconds to prevent permanent hangs
+                volumes={
+                    str(agent.workspace.root): {
+                        "bind": "/workspace",
+                        "mode": "rw",
+                    }
+                },
+                working_dir="/workspace",
+                stderr=True,
+                stdout=True,
+                detach=True,
+                name=container_name,
+            )  # type: ignore
+            container_is_fresh = True
+
+        if not container.status == "running":
+            container.start()
+        elif not container_is_fresh:
+            container.restart()
+
+        logger.debug(f"Running {file_path} in container {container.name}...")
+        exec_result = container.exec_run(
             [
                 "python",
                 "-B",
                 file_path.relative_to(agent.workspace.root).as_posix(),
             ]
             + args,
-            volumes={
-                str(agent.workspace.root): {
-                    "bind": "/workspace",
-                    "mode": "rw",
-                }
-            },
-            working_dir="/workspace",
             stderr=True,
             stdout=True,
-            detach=True,
-        )  # type: ignore
-
-        container.wait()
-        logs = container.logs().decode("utf-8")
-        container.remove()
+        )
 
-        # print(f"Execution complete. Output: {output}")
-        # print(f"Logs: {logs}")
+        if exec_result.exit_code != 0:
+            raise CodeExecutionError(exec_result.output.decode("utf-8"))
 
-        return logs
+        return exec_result.output.decode("utf-8")
 
     except DockerException as e:
         logger.warn(