-RUN if [ ! -z ${HTTP_PROXY} ]; then echo "Acquire::http::proxy \"${HTTP_PROXY}\";" >> /etc/apt/apt.conf; fi && \
- if [ ! -z ${HTTPS_PROXY} ]; then echo "Acquire::https::proxy \"${HTTPS_PROXY}\";" >> /etc/apt/apt.conf; fi
-
-# Install Tomcat. This image already has curl.
-WORKDIR /tmp
-RUN wget -q http://archive.apache.org/dist/tomcat/tomcat-8/v8.0.37/bin/apache-tomcat-8.0.37.tar.gz
-RUN tar -xzf ${TOMCATTAR}
-RUN rm ${TOMCATTAR}
+
+RUN if [ -d /etc/apt ] && [ ! -z ${HTTP_PROXY} ]; then echo "Acquire::http::proxy \"${HTTP_PROXY}\";" >> /etc/apt/apt.conf; fi && \
+ if [ -d /etc/apt ] && [ ! -z ${HTTPS_PROXY} ]; then echo "Acquire::https::proxy \"${HTTPS_PROXY}\";" >> /etc/apt/apt.conf; fi
+