Fix build platform detection (#1174)

Made a mistake when setting up build_platform env var - it worked on
macos, but linux machines produced platform ids incompatible with the
CLI releases

Author: ilia-db

.github/workflows/create-build-artifacts.yml

@@ -25,6 +25,7 @@ jobs:
               working-directory: packages/databricks-vscode
               env:
                   GH_TOKEN: ${{ github.token }}
+                  BUILD_PLATFORM_ARCH: linux_amd64
 
             - uses: actions/upload-artifact@v3
               with:

packages/databricks-vscode/scripts/package-vsix.sh

@@ -42,7 +42,9 @@ esac
 # This CLI is used to request metadata about CLIs terraform dependencies.
 if [ ! -d ./.build ]; then
   mkdir ./.build
-  BUILD_PLATFORM_ARCH="$(uname -s | awk '{print tolower($0)}')_$(uname -m)"
+  if [ -z "$BUILD_PLATFORM_ARCH" ]; then
+      BUILD_PLATFORM_ARCH="$(uname -s | awk '{print tolower($0)}')_$(uname -m)"
+  fi
   ./scripts/fetch-databricks-cli.sh $BUILD_PLATFORM_ARCH ./.build
 fi