Self-Hosted Social Media Manager

I want to run my own open-source social-media-management platform instead of relying on SaaS tools. The instance needs to live on my server (Docker or bare-metal install—whatever you feel is most reliable) and must let me:

• connect Facebook, Instagram and Twitter accounts
• create and queue posts for each network from a single dashboard
• view basic analytics and reporting for all three channels

I’m open to any mature open-source project that already covers those functions; if you have more than one in mind, please explain the pros and cons before we start. Once we pick the stack, I’ll supply the VPS credentials and the required API keys.

Deliverables
• Fully deployed, secure self-hosted installation with admin access
• Written setup documentation + commands so I can recreate the environment
• Short walkthrough (screen share or recorded video) showing content creation, scheduling, and analytics working on all connected platforms
• One week of post-handover support for bug fixes or configuration questions

Please outline the open-source tool you propose, your installation plan, and the timeline for completion when you bid.