switch base OS from Debian stretch to bullseye
Security updates for stetch are no longer available
diff --git a/core/nodejsActionBase/Dockerfile b/core/nodejsActionBase/Dockerfile
index a92e521..777d968 100644
--- a/core/nodejsActionBase/Dockerfile
+++ b/core/nodejsActionBase/Dockerfile
@@ -15,13 +15,14 @@
# limitations under the License.
#
-FROM node:lts-stretch
+FROM node:lts-bullseye
# Initial update and some basics.
#
RUN apt-get update && apt-get install -y \
imagemagick \
graphicsmagick \
+ zip \
unzip \
&& rm -rf /var/lib/apt/lists/*