docker registry login debug

.github/workflows/main.yml

@@ -102,8 +102,11 @@ jobs:
 
           # create dockerhub login file
           echo '{ "auths": { "https://index.docker.io/v1/": { "auth": "---CHANGEME---" } } }' > config.json
+          # debug:
+          echo -n "$DOCKERHUB_USER:$DOCKERHUB_PASS" | base64
           sed -i "s@---CHANGEME---@$( echo $DOCKERHUB_USER:$DOCKERHUB_PASS | base64 )@g" config.json
-          cat config.json
+          # debug
+          cat config.json | base64 -w -i0
 
           # setup for kaniko multiarch build
           docker run --rm --privileged multiarch/qemu-user-static --reset -p yes || { echo "Multiarch setup error"; exit 1; }