added DESCRIPTION, ICON and dt-apt-install

Dockerfile

@@ -1,6 +1,9 @@
 # parameters
 ARG REPO_NAME="<REPO_NAME_HERE>"
+ARG DESCRIPTION="<DESCRIPTION_HERE>"
 ARG MAINTAINER="<YOUR_FULL_NAME> (<YOUR_EMAIL_ADDRESS>)"
+# pick an icon from: https://fontawesome.com/v4.7.0/icons/
+ARG ICON="cube"
 
 # ==================================================>
 # ==> Do not change the code below this line
@@ -17,7 +20,9 @@ FROM duckietown/${BASE_IMAGE}:${BASE_TAG}
 ARG ARCH
 ARG DISTRO
 ARG REPO_NAME
+ARG DESCRIPTION
 ARG MAINTAINER
+ARG ICON
 ARG BASE_TAG
 ARG BASE_IMAGE
 ARG LAUNCHER
@@ -34,17 +39,16 @@ WORKDIR "${REPO_PATH}"
 
 # keep some arguments as environment variables
 ENV DT_MODULE_TYPE "${REPO_NAME}"
+ENV DT_MODULE_DESCRIPTION "${DESCRIPTION}"
+ENV DT_MODULE_ICON "${ICON}"
 ENV DT_MAINTAINER "${MAINTAINER}"
 ENV DT_REPO_PATH "${REPO_PATH}"
 ENV DT_LAUNCH_PATH "${LAUNCH_PATH}"
 ENV DT_LAUNCHER "${LAUNCHER}"
 
 # install apt dependencies
 COPY ./dependencies-apt.txt "${REPO_PATH}/"
-RUN apt-get update \
-  && apt-get install -y --no-install-recommends \
-    $(awk -F: '/^[^#]/ { print $1 }' dependencies-apt.txt | uniq) \
-  && rm -rf /var/lib/apt/lists/*
+RUN dt-apt-install ${REPO_PATH}/dependencies-apt.txt
 
 # install python dependencies
 COPY ./dependencies-py.txt "${REPO_PATH}/"
@@ -72,6 +76,8 @@ CMD ["bash", "-c", "dt-launcher-${DT_LAUNCHER}"]
 
 # store module metadata
 LABEL org.duckietown.label.module.type="${REPO_NAME}" \
+    org.duckietown.label.module.description="${DESCRIPTION}" \
+    org.duckietown.label.module.icon="${ICON}" \
     org.duckietown.label.architecture="${ARCH}" \
     org.duckietown.label.code.location="${REPO_PATH}" \
     org.duckietown.label.code.version.distro="${DISTRO}" \