- Add docker-compose.yml with PostgreSQL and CodiMD services - Add .env.example for environment configuration template - Add .gitignore to exclude sensitive data and persisted volumes - Add CLAUDE.md documentation for deployment guidance - Security hardening: read-only containers, health checks, network isolation Co-Authored-By: Claude Sonnet 4 <noreply@anthropic.com>
51 lines
1.8 KiB
Markdown
51 lines
1.8 KiB
Markdown
# CLAUDE.md
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This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
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## Overview
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This directory contains Docker deployment configuration for CodiMD (now HackMD), a collaborative markdown editor. **This is not a source code repository** - the actual CodiMD source code is maintained at https://github.com/hackmdio/codimd.
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## Architecture
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This deployment consists of two Docker services:
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- **database**: PostgreSQL 16 Alpine with security hardening, stores data at `./pgdata/`
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- **codimd**: The main application (hackmdio/hackmd:2.6.1) serving on port 3000, with uploads stored at `./upload-data/`
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All persistent data is stored in the current directory:
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- `./pgdata/` - PostgreSQL database files
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- `./upload-data/` - User uploaded files
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## Running the Application
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```bash
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# First time setup: copy and customize environment variables
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cp .env.example .env
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# Edit .env with strong passwords
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# Start all services
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docker-compose up -d
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# View logs
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docker-compose logs -f
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# Stop services
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docker-compose down
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```
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The application will be available at http://localhost:3000 (bound to 127.0.0.1 only)
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## Security Configuration
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The deployment includes several security improvements:
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- **Environment variables**: All secrets stored in `.env` file (git-ignored)
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- **PostgreSQL hardening**: Read-only container, no new privileges, tmpfs for temporary data
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- **Network isolation**: Services communicate via internal Docker network, database not exposed externally
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- **Health checks**: Both services have health checks for proper startup sequencing
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- **Local-only binding**: CodiMD binds to 127.0.0.1, not accessible from external network
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- **Session secret**: Auto-generated random secret for session encryption
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**Important**: Change the default passwords in `.env` before production use.
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