feat: Add Docker Compose Dev Generator Skill & DevOps Loop Agent

agents/devops-infinity-loop-specialist.agent.md

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+---
+name: devops-infinity-loop-specialist
+description: A Senior DevOps Engineer guiding you through CI/CD, containerization, and the entire Plan to Monitor loop.
+model: gpt-4
+tools: []
+---
+
+You are a Senior DevOps and Site Reliability Engineer (SRE). Your goal is to help developers implement the DevOps Infinity Loop (Plan → Code → Build → Test → Release → Deploy → Operate → Monitor).
+
+Your expertise includes:
+- Containerization (Docker, Kubernetes)
+- CI/CD Pipelines (GitHub Actions, GitLab CI, Azure DevOps)
+- Infrastructure as Code (Terraform, Ansible)
+- Monitoring & Observability (Prometheus, Grafana, OpenTelemetry)
+
+When interacting with the user:
+1. Always identify which phase of the DevOps loop their question belongs to.
+2. Provide secure, scalable, and automated solutions.
+3. Emphasize "Shift-Left" security and automated testing.
+4. Give practical, copy-pasteable code snippets for pipelines or IaC when applicable.
+5. Keep responses concise, highly technical, and focused on operational excellence.

skills/docker-compose-dev-generator/SKILL.md

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+---
+name: docker-compose-dev-generator
+description: Generates a complete docker-compose.yml tailored for local development with hot-reload and healthchecks
+---
+
+# Docker Compose Dev Generator
+
+This skill instructs GitHub Copilot to analyze your project stack and generate a highly optimized `docker-compose.yml` file specifically designed for local development.
+
+## When to Use This Skill
+
+Use this skill when you need to:
+- Set up a local development environment for a new or existing project.
+- Configure hot-reloading (volume mapping) so code changes reflect immediately without rebuilding containers.
+- Add local infrastructure dependencies like databases (PostgreSQL, MySQL, MongoDB) or caching (Redis) with proper healthchecks.
+
+## Prerequisites
+
+- Docker Desktop or Docker Engine installed.
+- A basic understanding of the project's stack (e.g., Node.js, Python, React).
+- GitHub Copilot Chat active in your IDE.
+
+## Core Capabilities
+
+### 1. Stack Detection
+Analyzes your current workspace (e.g., `package.json`, `requirements.txt`) to automatically determine the required services and base images.
+
+### 2. Hot-Reloading Configuration
+Maps local directories to container volumes, allowing developers to see changes in real-time without restarting the container.
+
+### 3. Service Orchestration & Healthchecks
+Automatically configures `depends_on` and `healthcheck` blocks to ensure services (like an API) only start after their dependencies (like a database) are fully ready to accept connections.
+
+## Usage Examples
+
+### Example 1: Standard Web Stack
+**User prompt:**
+> "@workspace Generate a docker-compose file for local development for this project. It uses Node.js and needs a PostgreSQL database."
+
+### Example 2: Frontend with Hot-Reload
+**User prompt:**
+> "Create a docker-compose.yml for my React application with hot-reloading enabled and map it to port 3000."
+
+## Guidelines
+
+1. **Use Alpine or Slim images** - Default to lightweight base images for faster build times in local environments.
+2. **Implement Named Volumes** - Always use named volumes for database data persistence so data isn't lost when containers stop.
+3. **Explicit Port Mapping** - Clearly map container ports to host ports to avoid conflicts (e.g., `5432:5432`).
+
+## Common Patterns
+
+### Pattern: API + Database
+```yaml
+services:
+  api:
+    build: .
+    ports:
+      - "8080:8080"
+    volumes:
+      - .:/usr/src/app
+      - /usr/src/app/node_modules
+    depends_on:
+      db:
+        condition: service_healthy
+
+  db:
+    image: postgres:15-alpine
+    environment:
+      POSTGRES_USER: devuser
+      POSTGRES_PASSWORD: devpassword
+      POSTGRES_DB: devdb
+    ports:
+      - "5432:5432"
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U devuser"]
+      interval: 5s
+      timeout: 5s
+      retries: 5