Added git workflows and .gitignore

.github/workflows/docker-build.yml

@@ -0,0 +1,21 @@
+name: Docker Build and Test
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Build Docker image
+      run: docker build -t obsidian-learning-extension:test .
+
+    - name: Test Docker image
+      run: |
+        docker run --rm obsidian-learning-extension:test python -c "import learning_server; print('Server imports successfully')"

.gitignore

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+# Python
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+.Python
+env/
+venv/
+ENV/
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+
+# Data files (contains user progress)
+data/
+*.json
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+.DS_Store
+
+# Logs
+*.log
+
+# Environment
+.env
+.env.local
+
+# Docker
+.dockerignore
+
+# Testing
+.pytest_cache/
+.coverage
+htmlcov/