With a little more work:

    cat /etc/dpkg/dpkg.cfg.d/small
    path-exclude=/usr/share/locale/*
    path-exclude=/usr/share/man/*
    path-exclude=/usr/share/doc/*
    path-exclude=/usr/share/info/*

Saves about 15MB. Removing wget saves 50MB or so, since it uses a large library (libicu52).

    for p in $(dpkg --get-selections | cut -d $'\t' -f 1); do echo $(du -kc /x $(for i in `dpkg-query -L $p`; do [[ -f $i ]] && echo $i; done) | tail -n 1 | cut -d $'\t' -f 1) $p; done | sort -n | tail
    2676 libssl1.0.0:amd64
    3084 tzdata
    3152 libc-bin
    3288 groff-base
    3652 iptables
    5224 coreutils
    5660 perl-base
    6036 udev
    10308 libc6:amd64
    13784 systemd

(Since I've removed things, `dpkg-query -Wf '${Installed-Size}\t${Package}\n'` isn't accurate.)

Compressing Apt indices saves another 20MB [1]

The system is now down to 123MB.

[1] https://wiki.ubuntu.com/ReducingDiskFootprint#Compress_files