Update Docker tag checking

rebuild-docker.sh

@@ -63,6 +63,12 @@ git stash 1>&2
 git pull --rebase 1>&2
 popd 1>&2
 
+function docker_tag_exists() {
+    . /srv/repository/docker-credentials
+    TOKEN=$(curl -s -H "Content-Type: application/json" -X POST -d '{"username": "'${UNAME}'", "password": "'${UPASS}'"}' https://hub.docker.com/v2/users/login/ | jq -r .token)
+    curl --silent -f --head -lL https://hub.docker.com/v2/repositories/$1/tags/$2/ > /dev/null
+}
+
 # Docker Metaimage function
 do_docker_meta() {
     pushd ${metapackages_dir} 1>&2
@@ -76,9 +82,13 @@ do_docker_meta() {
         server_ok=""
         web_ok=""
         for arch in ${docker_arches[@]}; do
-            curl --silent -f -lSL https://index.docker.io/v1/repositories/jellyfin/jellyfin-server/tags/${version}-${arch} >/dev/null && server_ok="${server_ok}y"
+            if docker_tag_exists jellyfin/jellyfin-server ${version}-${arch}; then
+                server_ok="${server_ok}y"
+            fi
         done
-        curl --silent -f -lSL https://index.docker.io/v1/repositories/jellyfin/jellyfin-web/tags/${version} >/dev/null && web_ok="y"
+        if docker_tag_exists jellyfin/jellyfin-web ${version}; then
+            web_ok="y"
+        fi
         if [[ ${server_ok} != "yyy" || ${web_ok} != "y" ]]; then
             return
         fi