update build.sh

build.sh

@@ -2,15 +2,20 @@
 
 set -exu
 
-if [ $# -ne 2 ]; then
-    echo "$0 <container> <version>" >&2
+if [ $# -lt 2 ]; then
+    echo "$0 <container> <version> [push]" >&2
     exit 1
 fi
 container=$1; shift
 version=$1; shift
 
-name=harbor.k8s.ungleich.ch:ungleich-public/${container}
+name=harbor.k8s.ungleich.ch/ungleich-public/${container}
 
 tag=${name}:${version}
 
+cd $container
 docker build -t ${tag} .
+
+if [ "$#" -ge 1 ]; then
+    docker push ${tag}
+fi