use flutter tar.xz instead of git

Dockerfile

 ARG IMAGE_SERVER="registry.420joos.dev"
 ARG FLUTTER_VERSION="3.24.0"
 ARG DEPENDENCY_DIR="/tmp/dependencies"
-ARG FLUTTER_URL="https://github.com/flutter/flutter"
 
 FROM ubuntu:24.04 AS download
 
@@ -11,15 +10,16 @@ ARG DEPENDENCY_DIR
 ARG FLUTTER_DIR="$DEPENDENCY_DIR/flutter"
 ARG TMP_DEPENDENCIES_DIR="$DEPENDENCY_DIR/tmp"
 ARG GLIBC_URL="https://github.com/sgerrand/alpine-pkg-glibc/releases/download/2.35-r1"
+ARG FLUTTER_DOWNLOAD_FILE="flutter.tar.xz"
 
 RUN apt update \
-    && apt install -y wget git \
-    && git clone -b $FLUTTER_VERSION --depth 1 "${FLUTTER_URL}.git" $FLUTTER_DIR \
-    && cd $FLUTTER_DIR \
-    && git gc --prune=all \
-    # && wget https://storage.googleapis.com/flutter_infra_release/releases/stable/linux/flutter_linux_${FLUTTER_VERSION}-stable.tar.xz \
-    # && tar xf flutter_linux_${FLUTTER_VERSION}-stable.tar.xz --strip-components=1 --directory $FLUTTER_DIR \
-    && wget "$GLIBC_URL/glibc-2.35-r1.apk" --directory-prefix $TMP_DEPENDENCIES_DIR \
+    && apt install -y wget xz-utils
+
+RUN mkdir -p ${FLUTTER_DIR} \
+    && wget https://storage.googleapis.com/flutter_infra_release/releases/stable/linux/flutter_linux_${FLUTTER_VERSION}-stable.tar.xz -O ${FLUTTER_DOWNLOAD_FILE} \
+    && tar -xf ${FLUTTER_DOWNLOAD_FILE} --strip-components=1 --directory $FLUTTER_DIR
+
+RUN wget "$GLIBC_URL/glibc-2.35-r1.apk" --directory-prefix $TMP_DEPENDENCIES_DIR \
     && wget "$GLIBC_URL/glibc-bin-2.35-r1.apk" --directory-prefix $TMP_DEPENDENCIES_DIR
 
 
@@ -29,7 +29,6 @@ ARG DEPENDENCY_DIR
 
 ENV FLUTTER_HOME="/flutter"
 ENV PATH=$PATH:$FLUTTER_HOME/bin
-ENV FLUTTER_GIT_URL="unknown source"
 
 COPY --from=download $DEPENDENCY_DIR /