43 lines
1.1 KiB
Markdown
43 lines
1.1 KiB
Markdown
# Docker Compose Watch Mode (2025 GA)
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Docker Compose Watch enables automatic hot reload during local development by synchronizing file changes instantly without manual container restarts.
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## Three Watch Actions
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### 1. sync - Hot Reload
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For frameworks with hot reload (React, Next.js, Node.js, Flask).
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Copies changed files directly into running container.
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### 2. rebuild - Compilation
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For compiled languages (Go, Rust, Java) or dependency changes.
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Rebuilds image and recreates container when files change.
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### 3. sync+restart - Config Changes
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For configuration files requiring restart.
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Syncs files and restarts container.
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## Usage
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```yaml
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services:
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frontend:
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build: ./frontend
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develop:
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watch:
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- action: sync
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path: ./frontend/src
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target: /app/src
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ignore: [node_modules/, .git/]
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- action: rebuild
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path: ./frontend/package.json
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```
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Start with: `docker compose up --watch`
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## Benefits
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- Better performance than bind mounts
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- No file permission issues
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- Intelligent syncing
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- Supports rebuild capability
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- Works on all platforms
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