Container Use: Enabling Conflict-Free Parallel Development with AI Coding Agents

The Dagger team has introduced Container Use, an open-source tool that redefines how AI-based coding agents interact with shared codebases. By assigning each agent its own containerized sandbox and Git worktree, Container Use enables parallel development without conflicts, manual stashing, or clone juggling.

Isolated Environments for Concurrent Agent Execution

Traditional approaches to running multiple agents on the same repository often result in merge conflicts, overwritten changes, or complex stash workflows. Container Use solves this by provisioning isolated environments for each agent, allowing them to operate independently on the same codebase.

Each environment includes:

• A lightweight container powered by Dagger
• A dedicated Git worktree for version control isolation
• Terminal access and service tunneling for full agent control

Integration with Zed Editor

Container Use integrates seamlessly with the Zed editor, enabling developers to launch and manage agent environments directly from their workspace. When activated, the tool automates environment creation and lifecycle management, allowing agents to run in the background without disrupting the main editing session.

Background Profiles

Developers can configure a “background” profile in Zed, where Container Use handles agent tasks asynchronously. This setup allows users to:

• Monitor agent activity via container-use watch
• Inspect command history with container-use log
• Compare changes using container-use diff
• Switch contexts or intervene interactively via terminal access

Workflow Benefits

By combining containerization with Git worktrees, Container Use offers several advantages for AI-driven development:

• Conflict-free parallelism: Agents work independently without interfering with each other
• Improved debugging: Each container supports interactive inspection and service tunneling
• Scalable automation: Developers can run multiple agents simultaneously across tasks
• Context switching: Easily move between agent environments without losing state

Command-Line Interface

Container Use provides a simple CLI for managing agent environments:

container-use list      # View active environments
container-use watch     # Monitor agent activity
container-use log       # Review command history
container-use diff      # Compare changes across agents

Conclusion

Container Use introduces a powerful abstraction for managing AI coding agents in parallel. By leveraging containerized sandboxes and Git worktrees, it eliminates workflow conflicts and simplifies multi-agent orchestration. Whether used with Zed or integrated into custom pipelines, Container Use enables scalable, isolated development for modern engineering teams.