message: Reduce layers of aarch64-linux-android docker image
diff: @@ -3,14 +3,14 @@ FROM rustembedded/cross:aarch64-linux-android
  RUN apt-get update
  RUN apt-get install --assume-yes --no-install-recommends --fix-missing squashfs-tools libclang-dev wget unzip
  -RUN rm -r /android-ndk
  -RUN curl --retry 3 -sSfL "https://dl.google.com/android/repository/android-ndk-r19c-linux-x86_64.zip" -O
  -RUN unzip -q android-ndk-*.zip
  -RUN rm android-ndk-*.zip
  -RUN mv android-ndk-r19c/toolchains/llvm/prebuilt/linux-x86_64 /android-ndk
  -RUN rm -r android-ndk-r19c
  +RUN rm -r /android-ndk && \
  + curl --retry 3 -sSfL "https://dl.google.com/android/repository/android-ndk-r19c-linux-x86_64.zip" -O && \
  + unzip -q android-ndk-*.zip && \
  + rm android-ndk-*.zip && \
  + mv android-ndk-r19c/toolchains/llvm/prebuilt/linux-x86_64 /android-ndk && \
  + rm -r android-ndk-r19c
  -ENV PATH=/android-ndk/bin:$PATH
  -ENV CARGO_TARGET_AARCH64_LINUX_ANDROID_LINKER=aarch64-linux-android28-clang
  -ENV CC_aarch64_linux_android=aarch64-linux-android28-clang
  -ENV CXX_aarch64_linux_android=aarch64-linux-android28-clang++
  \ No newline at end of file
  +ENV PATH=/android-ndk/bin:$PATH \
  + CARGO_TARGET_AARCH64_LINUX_ANDROID_LINKER=aarch64-linux-android28-clang \
  + CC_aarch64_linux_android=aarch64-linux-android28-clang \
  + CXX_aarch64_linux_android=aarch64-linux-android28-clang++
  \ No newline at end of file
  