Fix Docker build: Download libvips tarball directly instead of git clone

- Replaced 'git clone' with 'curl' to download and extract the libvips source tarball. This avoids persistent 'Remote branch not found' errors when cloning specific tags in the Docker environment.

Dockerfile

@@ -29,14 +29,14 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 ARG LIBVIPS_VERSION=8.16.2
 
 WORKDIR /tmp
-RUN git clone --branch refs/tags/v${LIBVIPS_VERSION} --depth 1 https://github.com/libvips/libvips.git \
-    && cd libvips \
+RUN curl -L https://github.com/libvips/libvips/releases/download/v${LIBVIPS_VERSION}/vips-${LIBVIPS_VERSION}.tar.gz | tar xz --strip-components=1 \
+    && cd vips-${LIBVIPS_VERSION} \
     && meson setup build --prefix=/usr --buildtype=release \
     && ninja -C build \
     && ninja -C build install \
     && ldconfig \
     && cd / \
-    && rm -rf /tmp/libvips
+    && rm -rf /tmp/vips-${LIBVIPS_VERSION}
 
 # Stage 2: Build the Next.js app
 FROM node:22-bullseye-slim AS builder