Fix security vulnerabilities detected by Trivy

- CVE-2025-64756: glob CLI command injection - added override to use glob ^11.1.0
- CVE-2025-13466: body-parser DoS - added override to use body-parser ^2.2.1
- CVE-2025-64718: js-yaml prototype pollution - updated to js-yaml ^4.1.1
- BusyBox vulnerabilities (netstat, tar) - added apk upgrade to all Dockerfiles

Changes:
- backend/package.json: Updated js-yaml, added overrides for glob, body-parser
- frontend/package.json: Added overrides for glob, js-yaml
- All Dockerfiles: Added 'apk upgrade --no-cache' to get latest security patches
- backend/Dockerfile.dev: Updated from node:18-alpine to node:20-alpine

frontend/Dockerfile

@@ -30,6 +30,9 @@ RUN npm run build
 # Production stage
 FROM nginx:alpine
 
+# Upgrade all packages to fix security vulnerabilities (BusyBox CVEs)
+RUN apk upgrade --no-cache
+
 # Install runtime dependencies
 RUN apk add --no-cache curl
 

frontend/Dockerfile.dev

@@ -3,6 +3,9 @@ FROM node:20-alpine
 
 WORKDIR /app
 
+# Upgrade all packages to fix security vulnerabilities (BusyBox CVEs)
+RUN apk upgrade --no-cache
+
 # Copy package files
 COPY package*.json ./
 

frontend/Dockerfile.prod

@@ -25,6 +25,9 @@ RUN npm run build
 # Production stage
 FROM nginx:alpine
 
+# Upgrade all packages to fix security vulnerabilities (BusyBox CVEs)
+RUN apk upgrade --no-cache
+
 # Install runtime dependencies
 RUN apk add --no-cache curl
 

frontend/package.json

@@ -65,5 +65,9 @@
   },
   "optionalDependencies": {
     "@rollup/rollup-linux-x64-gnu": "^4.45.1"
+  },
+  "overrides": {
+    "glob": "^11.1.0",
+    "js-yaml": "^4.1.1"
   }
 }