Add Firebase config to Dockerfile and workflow

Dockerfile

@@ -12,6 +12,23 @@ RUN npm ci
 # Copy source code
 COPY . .
 
+# Set environment variables
+ARG NEXT_PUBLIC_FIREBASE_API_KEY
+ARG NEXT_PUBLIC_FIREBASE_AUTH_DOMAIN
+ARG NEXT_PUBLIC_FIREBASE_PROJECT_ID
+ARG NEXT_PUBLIC_FIREBASE_STORAGE_BUCKET
+ARG NEXT_PUBLIC_FIREBASE_MESSAGING_SENDER_ID
+ARG NEXT_PUBLIC_FIREBASE_APP_ID
+ARG NEXT_PUBLIC_ENCRYPTION_KEY
+
+ENV NEXT_PUBLIC_FIREBASE_API_KEY=$NEXT_PUBLIC_FIREBASE_API_KEY
+ENV NEXT_PUBLIC_FIREBASE_AUTH_DOMAIN=$NEXT_PUBLIC_FIREBASE_AUTH_DOMAIN
+ENV NEXT_PUBLIC_FIREBASE_PROJECT_ID=$NEXT_PUBLIC_FIREBASE_PROJECT_ID
+ENV NEXT_PUBLIC_FIREBASE_STORAGE_BUCKET=$NEXT_PUBLIC_FIREBASE_STORAGE_BUCKET
+ENV NEXT_PUBLIC_FIREBASE_MESSAGING_SENDER_ID=$NEXT_PUBLIC_FIREBASE_MESSAGING_SENDER_ID
+ENV NEXT_PUBLIC_FIREBASE_APP_ID=$NEXT_PUBLIC_FIREBASE_APP_ID
+ENV NEXT_PUBLIC_ENCRYPTION_KEY=$NEXT_PUBLIC_ENCRYPTION_KEY
+
 # Build the application
 RUN npm run build