diff --git a/demo-iota/js/deno/Dockerfile b/demo-iota/js/deno/Dockerfile
index c53079d..3b1e113 100644
--- a/demo-iota/js/deno/Dockerfile
+++ b/demo-iota/js/deno/Dockerfile
@@ -1,4 +1,4 @@
-FROM denoland/deno:debian-1.36.1
+FROM denoland/deno:1.36.1
 
 EXPOSE 3000
 
@@ -19,6 +19,10 @@ RUN npm --version
 ADD /js /js
 ADD /demo-iota/js/deno /demo-iota/js/deno
 
+# install build dependencies used for each adapter
+WORKDIR /js
+RUN npm i
+
 # build the packages for each adapter
 WORKDIR /js/packages/observe-sdk-datadog
 RUN npm run build
diff --git a/demo-iota/js/node/Dockerfile b/demo-iota/js/node/Dockerfile
index 023d5bb..6c9a375 100644
--- a/demo-iota/js/node/Dockerfile
+++ b/demo-iota/js/node/Dockerfile
@@ -5,6 +5,11 @@ EXPOSE 3000
 ADD /js /js
 ADD /demo-iota/js/node /demo-iota/js/node
 
+# install the global build dependencies used for each adapter
+WORKDIR /js
+RUN npm i
+
+# build the packages for each adapter
 WORKDIR /js/packages/observe-sdk-datadog
 RUN npm run build