52379fa76d
This is especially important for distributions like NixOS where `/bin/bash` doesn't exist, or for MacOS users who've installed a newer version of Bash than the one that comes with their OS. Signed-off-by: Andrew "Tianon" Page <admwiggin@gmail.com>
23 lines
1.3 KiB
Bash
23 lines
1.3 KiB
Bash
#!/usr/bin/env bash
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set -e
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if ! docker inspect -t image emptyfs &> /dev/null; then
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# let's build a "docker save" tarball for "emptyfs"
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# see https://github.com/docker/docker/pull/5262
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# and also https://github.com/docker/docker/issues/4242
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dir="$DEST/emptyfs"
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mkdir -p "$dir"
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(
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cd "$dir"
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echo '{"emptyfs":{"latest":"511136ea3c5a64f264b78b5433614aec563103b4d4702f3ba7d4d2698e22c158"}}' > repositories
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mkdir -p 511136ea3c5a64f264b78b5433614aec563103b4d4702f3ba7d4d2698e22c158
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(
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cd 511136ea3c5a64f264b78b5433614aec563103b4d4702f3ba7d4d2698e22c158
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echo '{"id":"511136ea3c5a64f264b78b5433614aec563103b4d4702f3ba7d4d2698e22c158","comment":"Imported from -","created":"2013-06-13T14:03:50.821769-07:00","container_config":{"Hostname":"","Domainname":"","User":"","Memory":0,"MemorySwap":0,"CpuShares":0,"AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"PortSpecs":null,"ExposedPorts":null,"Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":null,"Cmd":null,"Image":"","Volumes":null,"WorkingDir":"","Entrypoint":null,"NetworkDisabled":false,"OnBuild":null},"docker_version":"0.4.0","architecture":"x86_64","Size":0}' > json
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echo '1.0' > VERSION
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tar -cf layer.tar --files-from /dev/null
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)
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)
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( set -x; tar -cC "$dir" . | docker load )
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rm -rf "$dir"
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fi
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