diff --git a/Dockerfile b/Dockerfile
index a1ef418..15dfb0e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -13,5 +13,7 @@ RUN mkdir /usr/local/structurizr && \
     wget https://github.com/structurizr/cli/releases/latest/download/structurizr-cli.zip -O /usr/local/structurizr/structurizr-cli.zip && \
     unzip /usr/local/structurizr/structurizr-cli.zip -d /usr/local/structurizr
 
+RUN apk add --no-cache nodejs npm
+
 USER dtcuser
 ENV DIAGRAM_STRUCTURIZRCLI_HOME=/usr/local/structurizr