Update Dockerfile

Author: ntkme

Dockerfile

@@ -1,11 +1,10 @@
 FROM ghcr.io/dart-android/toybox
 
-COPY dartsdk-android-x64-release.tar.gz /build/dartsdk-android-x64-release.tar.gz
-COPY dartsdk-android-ia32-release.tar.gz /build/dartsdk-android-ia32-release.tar.gz
-COPY dartsdk-android-arm64-release.tar.gz /build/dartsdk-android-arm64-release.tar.gz
-COPY dartsdk-android-arm-release.tar.gz /build/dartsdk-android-arm-release.tar.gz
+ENV DART_SDK=/system/lib64/dart
+ENV PATH=$DART_SDK/bin:$PATH
 
-RUN case "$(uname -m)" in \
+RUN --mount=type=bind,source=.,target=/build \
+    case "$(uname -m)" in \
       x86_64) \
         tar -xzf /build/dartsdk-android-x64-release.tar.gz && mv dart-sdk /system/lib64/dart && \
         tar -xzf /build/dartsdk-android-ia32-release.tar.gz && mv dart-sdk /system/lib/dart \
@@ -14,12 +13,7 @@ RUN case "$(uname -m)" in \
         tar -xzf /build/dartsdk-android-arm64-release.tar.gz && mv dart-sdk /system/lib64/dart && \
         tar -xzf /build/dartsdk-android-arm-release.tar.gz && mv dart-sdk /system/lib/dart \
         ;; \
+      riscv64) \
+        tar -xzf /build/dartsdk-android-riscv64-release.tar.gz && mv dart-sdk /system/lib64/dart \
+        ;; \
     esac
-
-FROM ghcr.io/dart-android/toybox
-
-ENV DART_SDK=/system/lib64/dart
-ENV PATH=$DART_SDK/bin:$PATH
-
-COPY --from=0 /system/lib64/dart /system/lib64/dart
-COPY --from=0 /system/lib/dart /system/lib/dart