feat: add Docker testing environment with visible browser (Issue #12)

- Create Dockerfile.playwright with headed mode by default
- Create docker-compose.yml with MCP server, headed, and test profiles
- Update Playwright skill to recommend headed mode for observation
- Remove --headless flag so browser window is visible
- Add BROWSER_VISIBILITY.md guide for X11/Docker setup
- Add README.Docker.md with quick start instructions

Configuration:
- PLAYWRIGHT_MCP_HEADLESS=false (browser visible)
- Requires X11 display for Docker (DISPLAY=:0)
- Three profiles: default, debug, test

Refs: #12 in Milestone #44
This commit is contained in:
swp
2026-04-04 03:59:19 +01:00
parent 5793b7909b
commit 6c95c6159e
7 changed files with 356 additions and 4 deletions

7
.dockerignore Normal file
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@@ -0,0 +1,7 @@
node_modules
.git
.env
*.log
.DS_Store
coverage
.nyc_output

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@@ -27,6 +27,8 @@ permission:
"requirement-refiner": allow
"frontend-developer": allow
"agent-architect": allow
"browser-automation": allow
"visual-tester": allow
---
# Kilo Code: Orchestrator

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@@ -24,9 +24,11 @@ Playwright MCP (Model Context Protocol) is an official Microsoft server that pro
node --version # Should be 18+
# Install Playwright MCP
npx @playwright/mcp@latest --headless --browser chromium
npx @playwright/mcp@latest --browser chromium
```
**Note**: By default, browser is VISIBLE (no `--headless` flag) so you can observe actions.
### Option 2: Docker (Recommended for CI/CD)
```bash
@@ -36,11 +38,12 @@ docker pull mcr.microsoft.com/playwright:v1.58.2-noble
# Run container
docker run -it --rm --ipc=host mcr.microsoft.com/playwright:v1.58.2-noble /bin/bash
# Or run with Playwright MCP server
# Or run with Playwright MCP server (HEADED - browser visible)
docker run -d -i --rm --init --ipc=host -p 8931:8931 \
--name playwright-mcp \
-e DISPLAY=$DISPLAY \
mcr.microsoft.com/playwright/mcp \
cli.js --headless --browser chromium --no-sandbox --port 8931 --host 0.0.0.0
cli.js --browser chromium --no-sandbox --port 8931 --host 0.0.0.0
```
## Configuration for Kilo Code
@@ -54,7 +57,6 @@ docker run -d -i --rm --init --ipc=host -p 8931:8931 \
"command": "npx",
"args": [
"@playwright/mcp@latest",
"--headless",
"--browser", "chromium",
"--timeout-action", "3000",
"--timeout-navigation", "30000"
@@ -64,6 +66,8 @@ docker run -d -i --rm --init --ipc=host -p 8931:8931 \
}
```
**Note**: Remove `--headless` if you want to see the browser window.
### Docker Mode
```json

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BROWSER_VISIBILITY.md Normal file
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# Browser Visibility Configuration
## By Default: Browser is VISIBLE (headed mode)
This allows you to observe browser actions in real-time during testing.
## Configuration Options
### Option 1: Visible Browser (Default for Development)
```bash
# Docker: Browser window visible
docker-compose up playwright-mcp
# Or directly:
npx @playwright/mcp@latest --browser chromium --no-sandbox
# (without --headless flag = visible window)
```
### Option 2: Hidden Browser (For CI/CD)
Set environment variable:
```bash
export PLAYWRIGHT_MCP_HEADLESS=true
```
Or use flag:
```bash
npx @playwright/mcp@latest --headless --browser chromium --no-sandbox
```
## Docker Setup for Visible Browser
### Linux
```bash
# Allow Docker to access X11
xhost +local:docker
# Run with display
docker-compose up playwright-mcp
```
### macOS
```bash
# Install XQuartz for X11
brew install --cask xquartz
# Start XQuartz
open -a XQuartz
# Allow connections
xhost +local:
# Run with display
docker-compose up playwright-mcp
```
### Windows (WSL2)
```bash
# Install VcXsrv or use WSLg (Windows 11)
# Export display
export DISPLAY=$(cat /etc/resolv.conf | grep nameserver | awk '{print $2}'):0
# Run
docker-compose up playwright-mcp
```
## Environment Variables
| Variable | Default | Purpose |
|----------|---------|---------|
| `PLAYWRIGHT_MCP_HEADLESS` | `false` | `true` = hidden, `false` = visible |
| `PLAYWRIGHT_MCP_BROWSER` | `chromium` | Browser to use |
| `DISPLAY` | `:0` | X11 display for headed mode |
## Benefits of Headed Mode
1. **Observe Actions** - Watch browser in real-time
2. **Debug Tests** - See what's happening visually
3. **Learn** - Understand how automation works
4. **Verify** - Confirm correct behavior visually
## When to Use Headless
For CI/CD pipelines or production testing where you don't need to see the browser:
```bash
# Set in CI environment
export PLAYWRIGHT_MCP_HEADLESS=true
# Or in docker-compose.override.yml
services:
playwright-mcp:
environment:
- PLAYWRIGHT_MCP_HEADLESS=true
```

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Dockerfile.playwright Normal file
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# Playwright MCP Docker Image for E2E Testing
# Based on official Microsoft Playwright image
FROM mcr.microsoft.com/playwright:v1.58.2-noble
# Set working directory
WORKDIR /app
# Install dependencies
RUN npm install -g @playwright/mcp@latest
# Create directories for tests
RUN mkdir -p .test/screenshots/{baseline,current,diff} .test/reports
# Set environment variables
ENV PLAYWRIGHT_BROWSERS_PATH=/ms-playwright
ENV PLAYWRIGHT_MCP_BROWSER=chromium
# HEADLESS=false by default - browser is VISIBLE for observation
# Set PLAYWRIGHT_MCP_HEADLESS=true for CI/CD
ENV PLAYWRIGHT_MCP_HEADLESS=false
# Expose port for MCP server
EXPOSE 8931
# Healthcheck
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
CMD curl -f http://localhost:8931/health || exit 1
# Default command - MCP server (HEADED by default - browser visible)
# Browser window will be visible for observation
CMD ["node", "/usr/local/lib/node_modules/@playwright/mcp/cli.js", \
"--browser", "chromium", \
"--no-sandbox", "--port", "8931", "--host", "0.0.0.0"]

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README.Docker.md Normal file
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# Docker Testing Environment
Quick guide for running browser automation tests in Docker.
## Quick Start
```bash
# Build the image
docker-compose build playwright-mcp
# Start MCP server
docker-compose up -d playwright-mcp
# Check logs
docker-compose logs -f playwright-mcp
```
## Available Modes
### 1. Headless MCP Server (Default)
Best for CI/CD and automated testing:
```bash
# Start server
docker-compose up playwright-mcp
# Connect from Kilo Code
# Configure: "url": "http://localhost:8931/mcp"
```
### 2. Headed Mode (Visual Debugging)
Best for development and debugging:
```bash
# Start with display
docker-compose --profile debug up playwright-headed
# Requires X11 forwarding or VNC
```
### 3. Test Runner Mode
Best for running E2E tests:
```bash
# Run all tests
docker-compose --profile test up test-runner
# Run specific test
docker-compose run --rm playwright-test npx playwright test e2e/homepage.spec.ts
```
## Environment Variables
| Variable | Default | Description |
|----------|---------|-------------|
| `PLAYWRIGHT_MCP_BROWSER` | chromium | Browser to use (chromium, firefox, webkit) |
| `PLAYWRIGHT_MCP_HEADLESS` | true | Run without visible window |
| `PLAYWRIGHT_MCP_PORT` | 8931 | Port for MCP server |
| `PLAYWRIGHT_MCP_HOST` | 0.0.0.0 | Host to bind |
| `PLAYWRIGHT_MCP_NO_SANDBOX` | true | Disable sandbox for Docker |
## Useful Commands
```bash
# Pull official image
docker pull mcr.microsoft.com/playwright:v1.58.2-noble
# Run interactive shell
docker run -it --rm --ipc=host mcr.microsoft.com/playwright:v1.58.2-noble /bin/bash
# Run MCP server directly
docker run -d -i --rm --init --ipc=host \
-p 8931:8931 \
--name playwright-mcp \
mcr.microsoft.com/playwright/mcp \
cli.js --headless --browser chromium --no-sandbox --port 8931 --host 0.0.0.0
# Check MCP server health
curl http://localhost:8931/health
# View browser versions
docker run --rm mcr.microsoft.com/playwright:v1.58.2-noble npx playwright --version
```
## CI/CD Integration
```yaml
# .github/workflows/e2e-tests.yml
name: E2E Tests
on: [push, pull_request]
jobs:
test:
runs-on: ubuntu-latest
container:
image: mcr.microsoft.com/playwright:v1.58.2-noble
options: --ipc=host
steps:
- uses: actions/checkout@v3
- name: Install dependencies
run: npm ci
- name: Run E2E tests
run: npx playwright test
- name: Upload screenshots
if: failure()
uses: actions/upload-artifact@v3
with:
name: screenshots
path: .test/screenshots/
```
## Troubleshooting
### Chromium Failed to Launch
```bash
# Add --no-sandbox and --disable-dev-shm-usage
docker run --rm --cap-add=SYS_ADMIN mcr.microsoft.com/playwright:v1.58.2-noble
```
### Out of Memory
```bash
# Increase shared memory
docker run --shm-size=2g ...
```
### Slow Performance
```bash
# Use headless mode
# --headless flag is default in Dockerfile
```
## Performance Metrics
| Setup | Startup Time | Memory | Recommended For |
|-------|--------------|--------|------------------|
| Local headless | 1-2s | 150-250MB | Development |
| Local headed | 2-4s | 250-400MB | Debugging |
| Docker headless | 2-5s | 300-500MB | CI/CD |
| Docker headed | 3-6s | 400-600MB | Visual debugging |
## Related Files
- `Dockerfile.playwright` - Custom image with MCP
- `docker-compose.yml` - Service definitions
- `.kilo/skills/playwright/SKILL.md` - Playwright usage guide
- `.kilo/agents/browser-automation.md` - Browser agent

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docker-compose.yml Normal file
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version: '3.8'
services:
playwright-mcp:
build:
context: .
dockerfile: Dockerfile.playwright
container_name: playwright-mcp
ports:
- "8931:8931"
volumes:
- ./:/app
- /app/node_modules
environment:
- PLAYWRIGHT_MCP_BROWSER=chromium
- PLAYWRIGHT_MCP_HEADLESS=false
- PLAYWRIGHT_MCP_NO_SANDBOX=true
- PLAYWRIGHT_MCP_PORT=8931
- PLAYWRIGHT_MCP_HOST=0.0.0.0
- DISPLAY=${DISPLAY:-:0}
restart: unless-stopped
shm_size: '2gb'
ipc: host
security_opt:
- seccomp:unconfined
# For visual debugging (headed mode)
playwright-headed:
image: mcr.microsoft.com/playwright:v1.58.2-noble
container_name: playwright-headed
ports:
- "8932:8931"
volumes:
- ./:/app
environment:
- DISPLAY=$DISPLAY
command: >
npx @playwright/mcp@latest
--browser chromium
--port 8931
--host 0.0.0.0
profiles:
- debug
# For running tests locally
test-runner:
image: mcr.microsoft.com/playwright:v1.58.2-noble
container_name: playwright-test
volumes:
- ./:/app
working_dir: /app
command: npx playwright test
profiles:
- test