feat: add git commit hash to Docker build process

Dockerfile

@@ -4,7 +4,7 @@
 FROM node:20-alpine AS builder
 
 # Install dependencies
-RUN apk add --no-cache python3 make g++
+RUN apk add --no-cache python3 make g++ git
 
 # Set working directory
 WORKDIR /app
@@ -18,12 +18,15 @@ RUN npm ci
 # Copy source code
 COPY . .
 
+# Get git commit hash
+RUN GIT_COMMIT_HASH=$(git rev-parse --short HEAD) && echo "GIT_COMMIT_HASH=$GIT_COMMIT_HASH" > .env
+
 # Generate Prisma client (with dummy PostgreSQL DATABASE_URL for build-time generation)
 # Note: A dummy URL is used since the real database is not available during build
 RUN DATABASE_URL="postgresql://user:pass@localhost:5432/dummy" npx prisma generate
 
-# Build the application (with dummy DATABASE_URL for static page generation)
-RUN DATABASE_URL="postgresql://user:pass@localhost:5432/dummy" npm run build
+# Build the application (with dummy DATABASE_URL for static page generation and git commit)
+RUN DATABASE_URL="postgresql://user:pass@localhost:5432/dummy" NEXT_PUBLIC_GIT_COMMIT=$(git rev-parse --short HEAD) npm run build
 
 # Stage 2: Runner
 FROM node:20-alpine AS runner