chore: add Dockerfiles and gitignore files for all services

Root:
- Add comprehensive .gitignore covering all subprojects

Seeder API (Node.js):
- Add Dockerfile with multi-stage build, non-root user, health check
- Add .dockerignore and .gitignore

Job Scraper (Python):
- Add Dockerfile with Python 3.12, non-root user
- Add .dockerignore and .gitignore

Existing backend/frontend Dockerfiles and .dockerignore already optimized

.gitignore

@@ -0,0 +1,84 @@
+# =============================================================================
+# GoHorse Jobs - Root .gitignore
+# =============================================================================
+
+# -----------------------------------------------------------------------------
+# OS & IDE
+# -----------------------------------------------------------------------------
+.DS_Store
+Thumbs.db
+*.swp
+*.swo
+*~
+.idea/
+.vscode/
+*.code-workspace
+
+# -----------------------------------------------------------------------------
+# Environment files (keep examples)
+# -----------------------------------------------------------------------------
+.env
+.env.local
+.env.*.local
+!.env.example
+
+# -----------------------------------------------------------------------------
+# Logs
+# -----------------------------------------------------------------------------
+logs/
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# -----------------------------------------------------------------------------
+# Backend (Go)
+# -----------------------------------------------------------------------------
+backend/main
+backend/*.exe
+backend/tmp/
+backend/.air.toml
+
+# -----------------------------------------------------------------------------
+# Frontend (Next.js)
+# -----------------------------------------------------------------------------
+frontend/.next/
+frontend/out/
+frontend/node_modules/
+frontend/.pnp/
+frontend/.pnp.js
+frontend/.vercel/
+
+# -----------------------------------------------------------------------------
+# Seeder API (Node.js)
+# -----------------------------------------------------------------------------
+seeder-api/node_modules/
+seeder-api/dist/
+
+# -----------------------------------------------------------------------------
+# Job Scraper (Python)
+# -----------------------------------------------------------------------------
+job-scraper-multisite/__pycache__/
+job-scraper-multisite/*.pyc
+job-scraper-multisite/.venv/
+job-scraper-multisite/venv/
+job-scraper-multisite/output/*.csv
+!job-scraper-multisite/output/.gitkeep
+
+# -----------------------------------------------------------------------------
+# Build artifacts
+# -----------------------------------------------------------------------------
+*.exe
+*.dll
+*.so
+*.dylib
+dist/
+build/
+coverage/
+
+# -----------------------------------------------------------------------------
+# Misc
+# -----------------------------------------------------------------------------
+.cache/
+*.bak
+*.tmp

job-scraper-multisite/.dockerignore

@@ -0,0 +1,13 @@
+# Python scraper .dockerignore
+__pycache__/
+*.pyc
+*.pyo
+.venv/
+venv/
+.env
+.git/
+.gitignore
+README.md
+*.md
+output/*.csv
+.DS_Store

job-scraper-multisite/.gitignore

@@ -0,0 +1,29 @@
+# Python
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+.Python
+.venv/
+venv/
+ENV/
+
+# Output (keep .gitkeep)
+output/*.csv
+
+# Environment
+.env
+.env.*
+
+# IDE
+.idea/
+.vscode/
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Distribution
+dist/
+build/
+*.egg-info/

job-scraper-multisite/Dockerfile

@@ -0,0 +1,25 @@
+# =============================================================================
+# GoHorse Jobs Scraper - Python Dockerfile
+# =============================================================================
+
+FROM python:3.12-slim
+
+WORKDIR /app
+
+# Install dependencies
+COPY requirements.txt ./
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy source
+COPY . .
+
+# Security: Run as non-root
+RUN useradd -m -u 1001 scraper && \
+    chown -R scraper:scraper /app
+
+USER scraper
+
+# Create output directory
+RUN mkdir -p /app/output
+
+CMD ["python", "main_scraper.py"]

seeder-api/.dockerignore

@@ -0,0 +1,11 @@
+# Seeder API .dockerignore
+node_modules/
+.env
+.env.*
+!.env.example
+.git/
+.gitignore
+README.md
+*.md
+.DS_Store
+*.log

seeder-api/.gitignore

@@ -0,0 +1,20 @@
+# Node.js
+node_modules/
+.env
+.env.*
+!.env.example
+
+# Logs
+*.log
+npm-debug.log*
+
+# OS
+.DS_Store
+Thumbs.db
+
+# IDE
+.idea/
+.vscode/
+
+# Git
+.git/

seeder-api/Dockerfile

@@ -0,0 +1,33 @@
+# =============================================================================
+# GoHorse Jobs Seeder API - Production Dockerfile
+# =============================================================================
+
+FROM node:20-alpine
+
+WORKDIR /app
+
+# Install dependencies
+COPY package*.json ./
+RUN npm ci --only=production && npm cache clean --force
+
+# Copy source
+COPY src/ ./src/
+
+# Security: Run as non-root
+RUN addgroup -g 1001 -S nodejs && \
+    adduser -u 1001 -S seeder -G nodejs && \
+    chown -R seeder:nodejs /app
+
+USER seeder
+
+# Environment
+ENV NODE_ENV=production \
+    PORT=3001
+
+EXPOSE 3001
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
+    CMD wget -qO- http://localhost:3001/health || exit 1
+
+CMD ["node", "src/index.js"]