Enable docker support for centos builds

- Added an option '--buildindocker <osname>' to build.sh
- Fixed bug which caused packaging to be skipped by default.
- Fixed bug which caused tarballs to be generated twice.
- Fixed bug to propagate build params(like debug, nopackage) to docker build.

scripts/package/package.sh

@@ -16,30 +16,11 @@ source "$DIR/../common/_common.sh"
 
 if [ -z "$DOTNET_BUILD_VERSION" ]; then
     TIMESTAMP=$(date "+%Y%m%d%H%M%S")
-    DOTNET_BUILD_VERSION=0.0.1-alpha-t$TIMESTAMP
+    DOTNET_BUILD_VERSION=0.0.1-dev-t$TIMESTAMP
 fi
 
-STAGE2_DIR=$REPOROOT/artifacts/$RID/stage2
+header "Generating tarball"
+$DIR/package-dnvm.sh
 
-if [ ! -d "$STAGE2_DIR" ]; then
-    error "missing stage2 output in $STAGE2_DIR" 1>&2
-    exit
-fi
-
-PACKAGE_DIR=$REPOROOT/artifacts/packages/dnvm
-[ -d "$PACKAGE_DIR" ] || mkdir -p $PACKAGE_DIR
-
-PACKAGE_SHORT_NAME=dotnet-${OSNAME}-x64.${DOTNET_BUILD_VERSION}
-PACKAGE_NAME=$PACKAGE_DIR/${PACKAGE_SHORT_NAME}.tar.gz
-
-cd $STAGE2_DIR
-
-header "Packaging $PACKAGE_SHORT_NAME"
-
-# Tar up the stage2 artifacts
-# We need both "*" and ".version" to ensure we pick up that file
-tar -czf $PACKAGE_NAME * .version
-
-info "Packaged stage2 to $PACKAGE_NAME"
-
-$REPOROOT/scripts/publish/publish.sh $PACKAGE_NAME
+header "Generating Native Installer"
+$DIR/package-native.sh