Avoid printing GITHUB_TOKEN on bk docker

Author: felipecrs

bin/bk-docker

@@ -23,6 +23,7 @@ d="$(cd "$(dirname "$0")/.." && pwd)"
 
 if [ -z "$GITHUB_TOKEN" ]; then
   GITHUB_TOKEN=$(pkgx gh auth token)
+  export GITHUB_TOKEN
 fi
 
 if [ "$1" = --pull ]; then
@@ -77,7 +78,7 @@ exec docker run \
   --volume "$VOLUME_NAME:/root/.pkgx" \
   --env DENO_DIR=/root/.pkgx/.cache/deno \
   --env PKGX_PANTRY_PATH=/work \
-  --env GITHUB_TOKEN=$GITHUB_TOKEN \
+  --env GITHUB_TOKEN \
   --env CLICOLOR_FORCE=1 \
   --workdir /work \
   pkgxdev/pkgx \