Improve the local builds (#1593)

Author: mattleibow

scripts/Docker/ubuntu16/clang-cross/build-local.sh

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+set -e
+
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+
+ARCH="arm"
+if [ "$1" ]; then
+    ARCH="$1"
+fi
+
+(cd $DIR && docker build --tag skiasharp-$ARCH .)
+(cd $DIR/../../../../ && docker run --rm --name skiasharp-$ARCH --volume $(pwd):/work skiasharp-$ARCH /bin/bash ./bootstrapper.sh -t externals-linux-clang-cross -c Release --buildarch=$ARCH)

utils/NativeLibraryMiniTest/docker/build.sh

@@ -5,7 +5,6 @@ DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
 mkdir -p $DIR/source
 cp -R $DIR/../source/* $DIR/source/
 cp -R $DIR/NativeLibraryMiniTest.csproj $DIR/source/
-cp -R $DIR/nuget.config $DIR/source/
 cp -R $DIR/../../../output/native/linux/arm/libSkiaSharp.so $DIR/source/
 
 (cd $DIR && docker build --tag skiasharp/minitest .)