How to Fix Docker Error: Port Is Already Allocated
Fix the Docker 'port is already allocated' error: find what's using the port with docker ps, ss, and lsof, then free it or change the mapping.
Sysadmin Desk Jun 13, 2026 8 min read
All Guides
71 step-by-step IT guides and fixes across Windows Server, Microsoft 365, Teams, Windows, Docker, and virtualization.
Playwright MCP for Claude Code: Browser Testing That Verifies Itself
Add the Playwright MCP server so Claude Code can drive a real browser — navigate, click, screenshot, assert. The verify-my-change loop, headless vs headed, WSL notes.
MCSA Guru Team Jun 13, 2026 5 min read
Claude Code + Postgres: A Safe Database Workflow with MCP
Connect Postgres to Claude Code with an MCP server the safe way — read-only roles, non-prod targets, schema inspection, and query workflows on Windows and WSL.
MCSA Guru Team Jun 12, 2026 5 min read
OpenCode Custom Providers: Connect DeepSeek, GLM, Kimi, Qwen
Configure OpenCode to use DeepSeek, GLM, Kimi, or Qwen through custom providers. opencode.json with the OpenAI-compatible SDK, model IDs, API keys, and fixes.
MCSA Guru Team Jun 12, 2026 4 min read
Automate Docker Workflows with Claude Code and MCP
Use Claude Code with an MCP server to inspect containers, read logs, and debug Docker on Windows and WSL — what to connect, safe scope, and example workflows.
MCSA Guru Team Jun 12, 2026 5 min read
Convert HEIC to JPG on Windows Free Using WSL
Convert HEIC to JPG free on Windows using WSL. Turn iPhone photos into JPG with heif-convert or ImageMagick, batch a whole folder, and keep every file local.
MCSA Guru Team Jun 12, 2026 4 min read
Claude Code Setup for Sysadmins: A Practical Guide
Set up Claude Code for IT and infrastructure work — install on Windows and WSL, user vs project config, safe permissions, the right MCP servers, and guardrails.
MCSA Guru Team Jun 12, 2026 5 min read
Subagents vs Parallel Agents: Claude Code and Git Worktrees
Compare in-session Claude Code subagents with running parallel agents across git worktrees. Trade-offs, when each fits, and a worktree setup for Windows and WSL.
MCSA Guru Team Jun 12, 2026 7 min read
How to Find Your BitLocker Recovery Key
Locked out by BitLocker? Find your recovery key from a Microsoft account, Entra ID, Active Directory, or a printout — and learn why it's asked for after BIOS changes.
MCSA Guru Team Jun 12, 2026 8 min read