Moved Dockerfile, build.sh, and .dockerignore to web-app/ for better
project encapsulation. Each project now contains its own build configuration.
## Changes
- Moved Dockerfile to web-app/ and simplified paths
- Moved build.sh to web-app/
- Moved .dockerignore to web-app/
- Updated Dockerfile to work from web-app/ context (no workspace references)
- Updated documentation for new build workflow
## Build Workflow
- Build: Run from web-app/ directory (`cd web-app && ./build.sh 2.20.0`)
- Deploy: Run from repository root (`./deploy-standalone.sh 2.20.0`)
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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