diff --git a/Dockerfile b/Dockerfile
index 692705a..a0eabe6 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -12,7 +12,7 @@ LABEL maintainer="saarg"
 ARG WEBGRAB_VER
 
 # environment variables.
-ENV HOME /config
+ENV HOME=/config
 
 RUN \
   echo "**** install packages ****" && \
diff --git a/Dockerfile.aarch64 b/Dockerfile.aarch64
index 6cee353..b90bdda 100644
--- a/Dockerfile.aarch64
+++ b/Dockerfile.aarch64
@@ -12,8 +12,7 @@ LABEL maintainer="saarg"
 ARG WEBGRAB_VER
 
 # environment variables.
-ARG DEBIAN_FRONTEND="noninteractive"
-ENV HOME /config
+ENV HOME=/config
 
 RUN \
   echo "**** install packages ****" && \