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godoxy/socket-proxy/cmd/README.md

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# socket-proxy/cmd
The entry point for the Docker Socket Proxy sub-project, a secure proxy that exposes the Docker socket with fine-grained access control.
## Overview
This package provides a minimal main entry point that starts the Docker socket proxy server. The proxy acts as a gatekeeper, allowing or denying access to Docker API endpoints based on configured permissions.
This is similar to [lscr.io/linuxserver/socket-proxy](https://github.com/linuxserver/docker-socket-proxy) but:
- **No EOF errors**: Properly handles keep-alive connections to avoid occasional EOF errors that plague other implementations
- **GoDoxy integration**: Designed to work seamlessly with GoDoxy for container auto-discovery and route management
## Architecture
```mermaid
graph LR
A[HTTP Client] --> B[Socket Proxy]
B --> C{Deny?}
C -->|Yes| D[403 Forbidden]
C -->|No| E[Docker Socket]
E --> F[Docker Daemon]
```
## Main Function
```go
func main() {
// Validates that ListenAddr is set
// Starts HTTP server on configured address
// Uses socketproxy.NewHandler() for request routing
}
```
## Configuration
The socket proxy is configured via environment variables:
| Variable | Description | Default |
| -------------------- | -------------------------------- | ---------------------- |
| `DOCKER_SOCKET` | Path to Docker socket | `/var/run/docker.sock` |
| `LISTEN_ADDR` | Address to listen on | (empty - disabled) |
| `DOCKER_SOCKET_ADDR` | Alternative name for LISTEN_ADDR | (empty) |
## Usage
```bash
# Start the socket proxy
DOCKER_SOCKET=/var/run/docker.sock LISTEN_ADDR=:2375 go run main.go
```
## Related Packages
- `socketproxy/pkg` - Core proxy implementation with route handling and reverse proxy logic