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@alexlarsson @cgwalters
executable file 35 lines (34 sloc) 1.18 KB
#!/usr/bin/env bash
# Use bubblewrap to run /bin/sh reusing the host OS binaries (/usr), but with
# separate /tmp, /home, /var, /run, and /etc. For /etc we just inherit the
# host's resolv.conf, and set up "stub" passwd/group files. Not sharing
# /home for example is intentional. If you wanted to, you could design
# a bwrap-using program that shared individual parts of /home, perhaps
# public content.
#
# Another way to build on this example is to remove --share-net to disable
# networking.
set -euo pipefail
(exec bwrap --ro-bind /usr /usr \
--dir /tmp \
--dir /var \
--symlink ../tmp var/tmp \
--proc /proc \
--dev /dev \
--ro-bind /etc/resolv.conf /etc/resolv.conf \
--symlink usr/lib /lib \
--symlink usr/lib64 /lib64 \
--symlink usr/bin /bin \
--symlink usr/sbin /sbin \
--chdir / \
--unshare-all \
--share-net \
--die-with-parent \
--dir /run/user/$(id -u) \
--setenv XDG_RUNTIME_DIR "/run/user/`id -u`" \
--setenv PS1 "bwrap-demo$ " \
--file 11 /etc/passwd \
--file 12 /etc/group \
/bin/sh) \
11< <(getent passwd $UID 65534) \
12< <(getent group $(id -g) 65534)
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