Fix Dockerfile multi-stage builds, closes #1597.

build/Dockerfile

@@ -1,14 +1,11 @@
-FROM ubuntu:22.04 as base-environment
+FROM ubuntu:22.04 as oscal-os-dependencies
 
 ENV TZ=US/Eastern
-RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
-
-RUN apt-get update && apt-get dist-upgrade -y
-
-FROM base-environment as oscal-os-dependencies
-
-RUN apt-get install -y \
-    apt-utils build-essential git jq libxml2-utils maven nodejs npm python3-pip unzip wget && \
+RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone && \
+    apt-get update && \
+    apt-get dist-upgrade -y && \
+    DEBIAN_FRONTEND=noninteractive apt-get install -y \
+        apt-utils build-essential git jq libxml2-utils maven nodejs npm python3-pip unzip wget && \
     apt-get clean
 
 FROM golang:1.19.4-bullseye as oscal-hugo-build