fix: git for docker build

Dockerfile

@@ -2,7 +2,7 @@
 FROM node:22-alpine AS builder
 
 # Install Hugo + FFmpeg (video compression)
-RUN apk add --no-cache hugo ffmpeg
+RUN apk add --no-cache hugo ffmpeg git
 
 # Install pnpm
 RUN corepack enable && corepack prepare pnpm@latest --activate