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September 26, 2015 01:18
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Create a virtual build environment
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| function chroot_jail { | |
| TEMP="/tmp/$$.$(date +%s)" | |
| mkdir "$TEMP" | |
| sudo unionfs "$1=RW:/=RO" "$TEMP" -o allow_other -o dev -o cow | |
| trap "sudo fusermount -u \"$TEMP\" && rm -r \"$TEMP\"" INT TERM EXIT | |
| sudo chroot "$TEMP" /bin/bash -c "$(cat)" | |
| } | |
| chroot_jail out <<__CHROOT__ | |
| __CHROOT__ |
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| function chroot_jail { | |
| MOUNTS=$(printf ",%s" "${@:2}" "/") | |
| MOUNTS="$1$MOUNTS" | |
| TEMP="/tmp/$$.$(date +%s)" | |
| mkdir "$TEMP" | |
| sudo mhddfs "$MOUNTS" "$TEMP" -o allow_other -o dev | |
| trap "sudo fusermount -u \"$TEMP\" && rm -r \"$TEMP\"" INT TERM EXIT | |
| sudo chroot "$TEMP" /bin/bash -c "$(cat)" | |
| } | |
| chroot_jail output readonly <<__CHROOT__ | |
| rvm install 1.9.2 | |
| rvm use 1.9.2 | |
| rvm gem install bundler-1.0.13.gem --no-rdoc --no-ri | |
| __CHROOT__ | |
| tar --file "rvm.tar" --create --preserve-permissions --directory output |
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