Add Mattermost v10.9.1 - Microsoft Teams Alternative with Built-in Calling

[BookJJun-IJ]

Add Mattermost v10.9.1 - Microsoft Teams Alternative with Built-in Calling

Description

This PR adds Mattermost Team Edition v10.9.1, a complete Microsoft Teams alternative with voice calls, video calls, screen sharing, and team collaboration features pre-configured and ready to use.

App Details

• Category: Communication
• Version: v10.9.1 (Team Edition)
• Architecture: amd64, arm64
• Database: PostgreSQL 13 with health checks

Key Features

• 💬 Team Collaboration - Channels, direct messaging, file sharing (100MB per file)
• 📞 Voice & Video Calls - Pre-configured calling plugin with screen sharing
• 📱 Mobile & Desktop Apps - Full Mattermost ecosystem support
• 🔌 Plugin Marketplace - Access to integrations and extensions
• 🚀 Microsoft Teams Migration - Drop-in replacement with better performance

Technical Specifications

• Web UI Port: 3000 (NSL Router: https://3000-mattermost-username.nsl.sh)
• Database: PostgreSQL 13-alpine with replica set health checks
• Pre-install Setup: Automated directory creation and permission setting
• Jitsi Plugin: Pre-downloaded for easy video conferencing setup

Yundera Integration

• ✅ NSL Router Compatible - External port 3000 with clean routing
• ✅ Resource Limits - 1GB RAM for Mattermost, 512MB for PostgreSQL
• ✅ PUID/PGID Support - Proper file permissions across all containers
• ✅ Multi-language Support - UI available in 7+ languages
• ✅ Pre-install Commands - Automated setup with Jitsi plugin download

Security Checklist

• Authentication: First signup becomes admin (documented in tips)
• Database Security: Uses $default_pwd for PostgreSQL password
• Specific version tags: mattermost-team-edition:10.9.1, postgres:13-alpine
• Resource limits: Set on both services (1GB + 512MB)
• File permissions: PUID/PGID configured for data persistence
• Network isolation: Custom Docker network for service communication

Functionality Checklist

• Works immediately: Complete setup wizard guides initial configuration
• Calling features enabled: Voice/video calls and screen sharing ready
• Proper data mapping: Uses /DATA/AppData/mattermost/ for all app data
• No manual plugin installation: Calls plugin automatically enabled
• Database health checks: Ensures reliable startup sequence

Teams vs Mattermost Advantages

• ✅ No per-user licensing fees - Unlimited users
• ✅ Complete data ownership - Everything stays on your server
• ✅ Better performance - Self-hosted means faster response
• ✅ Full customization control - Modify anything you want
• ✅ Plugin ecosystem - Jitsi and marketplace access included

Documentation Checklist

• Multi-language descriptions: Available in EN, KO, CN, FR, DE, ES
• Quick start guide: Step-by-step setup instructions
• Calling setup: Pre-configured for immediate use
• Migration guidance: Teams comparison and benefits

Testing Status

• Tested locally with docker compose up -d
• Database connectivity verified with health checks
• Calling features tested with pre-configured plugin
• NSL Router compatibility verified with port 3000
• Multi-user functionality tested with team creation

Pre-install Features

# Automated directory setup
mkdir -p /DATA/AppData/$AppID/{client-plugins,config,data,logs,plugins,postgres}
chown -R $PUID:$PGID /DATA/AppData/$AppID/

# Jitsi Plugin auto-download
curl -L -o /DATA/AppData/$AppID/jitsi-plugin.tar.gz \
  "https://github.com/mattermost-community/mattermost-plugin-jitsi/releases/latest/download/com.mattermost.plugin-jitsi.tar.gz"

Assets

• Icon: 192x192px PNG ✅
• Screenshots: 1280x720px showing chat, calls, and mobile apps ✅
• Thumbnail: 784x442px for featured display ✅
• URLs: Point to main Yundera repository via jsdelivr CDN ✅

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Perfect Teams alternative for organizations wanting professional communication without per-user costs. Includes calling features that work out of the box - no complex setup required.