-grep trusty /etc/apt/sources.list && \
- echo "deb http://archive.ubuntu.com/ubuntu/ trusty-backports main restricted universe multiverse" >> /etc/apt/sources.list
+if grep -q trusty /etc/apt/sources.list ; then
+ if [ "${YARD_IMG_ARCH}" = "arm64" ]; then
+ echo "deb [arch=${YARD_IMG_ARCH}] http://ports.ubuntu.com/ trusty-backports main restricted universe multiverse" >> /etc/apt/sources.list
+ else
+ echo "deb http://archive.ubuntu.com/ubuntu/ trusty-backports main restricted universe multiverse" >> /etc/apt/sources.list
+ fi
+fi
+# Workaround for building on CentOS (apt-get is not working with http sources)
+# sed -i 's/http/ftp/' /etc/apt/sources.list
+
+# Force apt to use ipv4 due to build problems on LF POD.
+echo 'Acquire::ForceIPv4 "true";' > /etc/apt/apt.conf.d/99force-ipv4
+
+# Add hostname to /etc/hosts.
+# Allow console access via pwd
+cat <<EOF >/etc/cloud/cloud.cfg.d/10_etc_hosts.cfg
+manage_etc_hosts: True
+password: RANDOM
+chpasswd: { expire: False }
+ssh_pwauth: True
+EOF