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agents-container

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agents container docker in docker

agents-container 최신버젼 다운로드

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// repository documentation

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# agents container

this project provides a hardened container virtualization and security sandboxing environment to run untrusted developer or coding agents safely. it utilizes docker-in-docker, gvisor kernel virtualization, and the zero-trust l7 proxy.

the zero-trust l7 proxy is powered by [ottergate](https://github.com/gni/ottergate), which inspects outbound DNS and HTTPS traffic to enforce domain-level access control.

## operational commands

setup and boot infrastructure: build base images, start the nested docker daemon, and spin up the zero trust proxy.
```bash
./ac start
```

list active sandboxes and workspaces: check running containers, status details, and provisioned workspaces.
```bash
./ac list
```

check status and resource metrics: inspect container health, cpu/memory utilization, and disk space usage.
```bash
./ac status
```

run agent sandbox in headless mode: execute an agent blueprint in non-interactive background mode.
```bash
./ac run pi my_pi_run
```

run interactive shell inside sandbox: spawn a secure shell inside the agent container for interactive debugging.
```bash
./ac shell pi my_pi_debug
```

limit agent sandbox resources: restrict cpu, memory allocation, or gpu devices on sandbox start.
```bash
./ac run pi my_pi_run --cpus 2 --memory 1g
```

view host logs: stream operational logs of the outer docker-in-docker host container.
```bash
./ac logs host
```

view zero trust proxy logs: inspect domain routing, dns resolution, and network allowlist decisions.
```bash
./ac logs proxy
```

view gvisor kernel logs: trace user-space kernel events, system calls, and platform logs.
```bash
./ac logs gvisor
```

view specific agent logs: retrieve the terminal output of an active or stopped sandbox container.
```bash
./ac logs agent my_pi_run
```

clean sandbox credentials: wipe transient git/github/gitlab credentials while preserving local workspace files.
```bash
./ac clean my_pi_run
```

destroy sandbox workspace: stop the sandbox container and delete both its credentials and workspace files.
```bash
./ac destroy my_pi_run
```

teardown nested environments: stop the outer host daemon, remove all nested containers, and clear cache storage.
```bash
./ac down
```

## supported agent blueprints

the sandbox supports several pre-configured agent blueprints, located in the `agents/blueprints` directory. you can instantiate any of them using `./ac run <blueprint_name> <instance_name>`:

*   **`antigravity`**: specialized sandbox for the antigravity coding agent CLI.
*   **`gemini`**: pre-configured container environment tailored for google gemini code assistants.
*   **`claude`**: pre-configured container environment tailored for anthropic claude developer agents.
*   **`hermes`**: customized runtime environment for the hermes developer agent.
*   **`codex`**: optimized developer environment for openai codex and chat-based coding agents.
*   **`opencode`**: sandbox designed for open-source code interpreter agents (opencodeinterpreter).
*   **`pi`**: sandbox optimized for inflection pi and general-purpose developer agents.
*   **`base`**: a clean, minimal developer container with standard debugging and build utilities.

## architecture and security model

the security boundaries are constructed across nested virtualization, system call virtualization, privilege control, and network policies:

```mermaid
graph TD
    Host["💻 Physical Host OS (runc)"]
    
    subgraph DinD ["🐳 Docker-in-Docker Host (ac-dind-host)"]
        direction TB
        Dockerd["⚙️ Nested Docker Daemon (with runsc/gVisor & crun)"]
        
        subgraph Net ["🔒 Sandbox Network (172.20.0.0/16 - Internal Only)"]
            Agent["🤖 coding agent (runtime: runsc / gVisor)"]
            Ottergate["🦦 ottergate (runtime: runc)"]
        end
        
        ExtNet["🌐 External Network (Bridge to Internet)"]
    end
    
    Host -->|runc / privileged| DinD
    Agent -->|DNS / L7 HTTP Proxy| Ottergate
    Ottergate -->|allowlisted traffic| ExtNet
    ExtNet -->|NAT| Internet["🌍 Public Internet"]
    
    style Host fill:#1e1e2e,stroke:#313244,stroke-width:2px,color:#cdd6f4
    style DinD fill:#313244,stroke:#45475a,stroke-width:2px,color:#cdd6f4
    style Net fill:#181825,stroke:#eba0ac,stroke-width:2px,stroke-dasharray: 5 5,color:#cdd6f4
    style Agent fill:#f38ba8,stroke:#a6adc8,stroke-width:2px,color:#11111b
    style Ottergate fill:#fab387,stroke:#a6adc8,stroke-width:2px,color:#11111b
```

## host bootstrap pipeline

the host bootstrap process starts the outer dind container, generates certificates, sets up the nested docker network, and launches default network proxy utilities:

```mermaid
graph TD
    Start["🚀 User: ./ac start"] --> DinDHost["🐳 Start dind-host Container (runc)"]
    DinDHost --> Entrypoint["📜 entrypoint-dind.sh Runs"]
    
    subgraph DinDHostSetup ["⚙️ Host-Level Bootstrap"]
        Entrypoint --> NestedDockerd["🐳 Start Nested Docker Daemon (gVisor & crun)"]
        Entrypoint --> TLSGen["🔑 Generate TLS Certificates"]
        Entrypoint --> BuildBase["📦 Build agent-base Image"]
        Entrypoint --> Ottergate["🦦 Start Ottergate Proxy (runc)"]
        Entrypoint --> NetworkRules["🔒 Run update-iptables.sh"]
    end

style Start fill:#89b4fa,stroke:#a6adc8,stroke-width:2px,color:#11111b
    style DinDHostSetup fill:#1e1e2e,stroke:#313244,stroke-width:2px,color:#cdd6f4
```

## sandbox instance startup pipeline

when running a specific sandbox instance, the agent provisioning scripts configure local vault spaces before dropping privileges to start execution:

```mermaid
graph TD
    StartRun["🚀 User: ./ac run/shell"] --> ProvisionInstance["📁 Create instance directory, env & secrets"]
    ProvisionInstance --> LaunchAgent["🤖 Launch Agent Sandbox (runsc/gVisor)"]
    
    subgraph AgentSetup ["🤖 Nested Sandbox Bootstrap"]
        LaunchAgent --> InitGuard["🛡️ init-guard Runs (root)"]
        InitGuard --> CAConfig["📜 Load CA Certificates"]
        InitGuard --> GitConfig["⚙️ Configure git helper"]
        InitGuard --> VaultDaemon["🔑 Start vault-daemon (root)"]
        InitGuard --> SecureSecrets["🔒 Secure secrets (chmod 0000)"]
        InitGuard --> DropPrivs["👤 Drop privileges to node (UID 1000)"]
        DropPrivs --> RunAgent["🏃 Exec Agent script / shell"]
    end

style StartRun fill:#89b4fa,stroke:#a6adc8,stroke-width:2px,color:#11111b
    style AgentSetup fill:#181825,stroke:#eba0ac,stroke-width:2px,color:#11111b
    style RunAgent fill:#a6e3a1,stroke:#a6adc8,stroke-width:2px,color:#11111b
```

## credential vault security model

tokens are mounted to a secure directory, copied to root-only storage, cleared from memory, and accessed through process verification checks:

```mermaid
sequenceDiagram
    autonumber
    actor Agent as 🤖 Agent Process (node)
    participant Wrapper as 🛡️ vault-wrapper (setuid root)
    participant Daemon as ⚙️ vault-daemon (root)
    participant Vault as 🔒 /vault/gh_* (root-only)

Note over Agent: Runs 'git clone' or 'gh repo list'
    Agent->>Wrapper: Executes wrapped gh/glab command
    Note over Wrapper: Escalates to root via setuid
    Wrapper->>Daemon: Connects via Unix Socket /vault/vault.sock
    Note over Daemon: getsockopt peer credentials gets caller PID and exe path
    Daemon->>Daemon: Traces process chain to verify caller
    alt Caller is authorized Git/Agent process
        Daemon->>Vault: Reads decrypted GitHub/GitLab token
        Vault-->>Daemon: Returns token
        Daemon-->>Wrapper: Returns token over Socket
        Wrapper->>Wrapper: drops privileges to user 'node'
        Wrapper->>Agent: Pipes token to gh/glab command
    else Caller is unauthorized
        Daemon-->>Wrapper: Blocks connection / Returns empty
        Wrapper-->>Agent: Access denied
    end
```

## network traffic redirection and proxying

the agent network is internal-only, redirecting all outbound connections through custom system hooks to the zero-trust filtering firewall:

```mermaid
graph LR
    subgraph Step1 ["1. DNS Resolution"]
        Agent["🤖 Agent"] -->|Queries domain| DNS["🌐 Ottergate DNS"]
        DNS -->|Check allowlist| DNSResult{"Allowed?"}
    end

subgraph Step3 ["3. L7 Filtering"]
        Redirect -->|Hits Ottergate Proxy| Proxy["🔒 Ottergate Proxy"]
        Proxy -->|Inspect SNI/Host| L7Result{"Allowlisted?"}
    end

subgraph Step4 ["4. Egress"]
        L7Result -->|Yes| Internet["🌍 Public Internet"]
        L7Result -->|No| Drop["🚫 Drop connection"]
    end

style Step1 fill:#181825,stroke:#313244,stroke-width:1px,color:#cdd6f4
    style Step2 fill:#181825,stroke:#313244,stroke-width:1px,color:#cdd6f4
    style Step3 fill:#181825,stroke:#313244,stroke-width:1px,color:#cdd6f4
    style Step4 fill:#181825,stroke:#313244,stroke-width:1px,color:#cdd6f4
    style Agent fill:#f38ba8,stroke:#a6adc8,stroke-width:2px,color:#11111b
    style DNS fill:#89b4fa,stroke:#a6adc8,stroke-width:2px,color:#11111b
    style Internet fill:#a6e3a1,stroke:#a6adc8,stroke-width:2px,color:#11111b
```

## system virtualization stack

the runtime environment uses a nested container layout to segregate privileges, restrict system calls, and inspect outbound requests:

```mermaid
graph TD
    subgraph Host ["💻 Physical Host OS (runc)"]
        subgraph DinD ["🐳 Docker-in-Docker Host (runc privileged)"]
            subgraph Daemon ["⚙️ Nested Docker Daemon"]
                subgraph Network ["🔒 Sandbox Network (172.20.0.0/16)"]
                    subgraph AgentContainer ["🤖 Agent Sandbox (gVisor / runsc)"]
                        subgraph EnvHooks ["🔌 System Hooks (LD_PRELOAD)"]
                            AgentApp["🤖 Coding Agent Application"]
                        end
                    end
                    Ottergate["🦦 Ottergate Router & Proxy (runc)"]
                end
            end
        end
    end

style Host fill:#1e1e2e,stroke:#313244,stroke-width:2px,color:#cdd6f4
    style DinD fill:#181825,stroke:#45475a,stroke-width:2px,color:#cdd6f4
    style Daemon fill:#313244,stroke:#585b70,stroke-width:2px,color:#cdd6f4
    style Network fill:#11111b,stroke:#89b4fa,stroke-dasharray: 5 5,stroke-width:2px,color:#cdd6f4
    style AgentContainer fill:#313244,stroke:#f38ba8,stroke-width:2px,color:#cdd6f4
    style EnvHooks fill:#181825,stroke:#fab387,stroke-width:2px,color:#cdd6f4
    style AgentApp fill:#f5e0dc,stroke:#f2cdcd,stroke-width:2px,color:#11111b
    style Ottergate fill:#a6e3a1,stroke:#a6adc8,stroke-width:2px,color:#11111b
```

## author

author: Lucian BLETAN

## license

licensed under the Apache License, Version 2.0.

agents-container

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