Replace Flutter archive download with git clone of Flutter repo

Use a build matching the current architecture rather than downloading a prebuilt archive

.docker/android-apk-build.dockerfile

@@ -1,4 +1,6 @@
-FROM --platform=linux/amd64 ubuntu:latest as build 
+FROM ubuntu:latest as build 
+
+ENV FLUTTER_HOME "/home/komodo/.flutter-sdk"
 
 RUN apt update && \ 
     apt upgrade -y && \ 
@@ -16,22 +18,20 @@ RUN curl -o assets/coins.json https://raw.githubusercontent.com/KomodoPlatform/c
     mkdir -p android/app/src/main/cpp/libs/arm64-v8a && \
     python3 -m venv .venv && \ 
     .venv/bin/pip install -r .docker/requirements.txt && \
-    .venv/bin/python .docker/update_api.py --force
+    .venv/bin/python .docker/update_api.py --force && \
+    git clone https://github.com/flutter/flutter.git ${FLUTTER_HOME} && \
+    cd ${FLUTTER_HOME} && \
+    git fetch && \
+    git checkout tags/2.8.1 
 
-FROM --platform=linux/amd64 ghcr.io/cirruslabs/android-sdk:34 as final
+FROM ghcr.io/cirruslabs/android-sdk:34 as final
 
 ENV FLUTTER_VERSION="2.8.1"
 ENV FLUTTER_HOME "/home/komodo/.flutter-sdk"
 ENV USER="komodo"
 ENV PATH $PATH:$FLUTTER_HOME/bin
 
-# Download and extract Flutter SDK
-RUN mkdir -p $FLUTTER_HOME \
-    && git config --global --add safe.directory /home/komodo/.flutter-sdk \
-    && cd $FLUTTER_HOME \
-    && curl --fail --remote-time --silent --location -O https://storage.googleapis.com/flutter_infra_release/releases/stable/linux/flutter_linux_${FLUTTER_VERSION}-stable.tar.xz \
-    && tar xf flutter_linux_${FLUTTER_VERSION}-stable.tar.xz --strip-components=1 \
-    && rm flutter_linux_${FLUTTER_VERSION}-stable.tar.xz
+COPY --from=build --chown=$USER:$USER ${FLUTTER_HOME} ${FLUTTER_HOME}
 
 RUN flutter config --no-analytics  \
     && flutter precache \

.docker/android-dev.dockerfile

@@ -19,11 +19,10 @@ USER $USER
 # Download and extract Flutter SDK
 RUN mkdir -p /home/komodo/workspace \
     && chown -R $USER:$USER /home/komodo/workspace \
-    && mkdir -p $FLUTTER_HOME \
-    && cd $FLUTTER_HOME \
-    && curl --fail --remote-time --silent --location -O https://storage.googleapis.com/flutter_infra_release/releases/stable/linux/flutter_linux_${FLUTTER_VERSION}-stable.tar.xz \
-    && tar xf flutter_linux_${FLUTTER_VERSION}-stable.tar.xz --strip-components=1 \
-    && rm flutter_linux_${FLUTTER_VERSION}-stable.tar.xz \
+    && git clone https://github.com/flutter/flutter.git ${FLUTTER_HOME} \
+    && cd ${FLUTTER_HOME} \
+    && git fetch \
+    && git checkout tags/2.8.1 \
     && flutter config --no-analytics  \
     && flutter precache \
     && yes "y" | flutter doctor --android-licenses \