52 lines
1.3 KiB
Bash
Executable File
52 lines
1.3 KiB
Bash
Executable File
#!/bin/sh
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set -e
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if [ $# -lt 1 ]; then
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echo "usage: $0 <image> [cmdline] [arch]"
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exit 1
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fi
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image="$1"
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cmdline="$2"
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arch="$3"
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staging=$(mktemp -d)
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trap "rm -rf '$staging'" EXIT
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if [ -z "$arch" ]; then
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arch=$(apk --print-arch)
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fi
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apk add --root="$staging" --arch "$arch" --repositories-file /etc/apk/repositories --keys-dir /etc/apk/keys --initdb \
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alpine-baselayout busybox busybox-suid cryptsetup zfs dropbear
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cp -R rootfs/* "$staging"
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cc -static askpass.c -o "$staging"/bin/askpass
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git_tag="$(git describe --tags --exact-match HEAD 2>/dev/null || true)"
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git_branch="$(git symbolic-ref HEAD 2>/dev/null || true)"
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git_latestcommit="$(git log -1 --date='short' --format='%h-%ad' || true)"
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if [ -n "$git_tag" ]; then
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version="$git_tag"
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elif [ -n "$git_latestcommit" ]; then
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version="$git_branch-$git_latestcommit"
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elif [ -n "$git_branch" ]; then
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version="$git_branch-???"
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else
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version="???"
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fi
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echo "$version" > "$staging"/VERSION
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cp secrets/authorized_keys "$staging"
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mkdir -p "$staging"/etc/dropbear
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for x in rsa ecdsa; do
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hostkey=secrets/dropbear_${x}_host_key
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if ! [ -f "$hostkey" ]; then
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"$staging"/usr/bin/dropbearkey -t $x -f "$hostkey"
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fi
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cp "$hostkey" "$staging"/etc/dropbear
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done
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echo " $cmdline" >> "$staging"/cmdline
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(cd "$staging" && find . | cpio -H newc -o | gzip -9) > "$image"
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