Refactor Docker setup and add mock data support

- Updated .dockerignore and .gitignore for better file management.
- Introduced .env.example for environment variable configuration.
- Added docker-compose.dev.yml for development with mock data and live reload.
- Enhanced Dockerfile to include necessary dependencies and entrypoint script.
- Created mock_data.py to provide sample data for testing without OpenStack/Prometheus.
- Added unit tests for template filters in dashboard.
- Cleaned up various files for consistency and improved readability.

static/js/utils.js

@@ -1,26 +1,26 @@
-// Color utilities
-const getCSSVar = (varName) => {
-    return getComputedStyle(document.documentElement).getPropertyValue(varName).trim();
-}
-function getColorWithOpacity(className) {
-    const element = document.createElement('div');
-    element.className = className;
-    element.style.opacity = '1'; // Force opacity
-    element.textContent = '.';
-    
-    document.body.appendChild(element);
-    const computedColor = window.getComputedStyle(element).color;
-    document.body.removeChild(element);
-    
-    return computedColor;
-}
-// Utility function to calculate mean and standard deviation
-function calculateStats(data) {
-    if (!data || data.length === 0) return { mean: 0, std: 0 };
-    
-    const mean = data.reduce((a, b) => a + b, 0) / data.length;
-    const variance = data.reduce((a, b) => a + Math.pow(b - mean, 2), 0) / data.length;
-    const std = Math.sqrt(variance);
-    
-    return { mean, std };
+// Color utilities
+const getCSSVar = (varName) => {
+    return getComputedStyle(document.documentElement).getPropertyValue(varName).trim();
+}
+function getColorWithOpacity(className) {
+    const element = document.createElement('div');
+    element.className = className;
+    element.style.opacity = '1'; // Force opacity
+    element.textContent = '.';
+    
+    document.body.appendChild(element);
+    const computedColor = window.getComputedStyle(element).color;
+    document.body.removeChild(element);
+    
+    return computedColor;
+}
+// Utility function to calculate mean and standard deviation
+function calculateStats(data) {
+    if (!data || data.length === 0) return { mean: 0, std: 0 };
+    
+    const mean = data.reduce((a, b) => a + b, 0) / data.length;
+    const variance = data.reduce((a, b) => a + Math.pow(b - mean, 2), 0) / data.length;
+    const std = Math.sqrt(variance);
+    
+    return { mean, std };
 }