91 lines
2.3 KiB
Go
91 lines
2.3 KiB
Go
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package main
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import (
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"embed"
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"io"
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"log"
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"os"
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"os/exec"
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"path"
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"strings"
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)
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//go:embed alpine/keys
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var alpineKeys embed.FS
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func main() {
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config, err := readConfig()
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must(err)
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must(os.MkdirAll("rootfs/etc/apk/keys", 0700))
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must(os.WriteFile("rootfs/etc/apk/repositories", []byte(
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`https://dl-cdn.alpinelinux.org/alpine/v3.17/main
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https://dl-cdn.alpinelinux.org/alpine/v3.17/community`), 0600))
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must(os.WriteFile("rootfs/etc/resolv.conf", []byte(
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`nameserver 8.8.8.8`), 0644))
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keys, err := alpineKeys.ReadDir("alpine/keys")
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must(err)
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for _, entry := range keys {
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o, err := os.Create(path.Join("rootfs/etc/apk/keys/", entry.Name()))
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must(err)
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s, err := alpineKeys.Open(path.Join("alpine/keys", entry.Name()))
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must(err)
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_, err = io.Copy(o, s)
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must(err)
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}
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must(os.MkdirAll("cache/_var_cache_apk", 0700))
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os.Remove("rootfs/etc/apk/cache")
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must(os.Symlink("/var/cache/apk", "rootfs/etc/apk/cache"))
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// must(os.MkdirAll("rootfs/var/cache", 0700))
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// must(os.RemoveAll("rootfs/var/cache/apk"))
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// must(os.Symlink("../../../cache/apk", "rootfs/var/cache/apk"))
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cmd := exec.Command("apk", "add",
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"--root", "rootfs",
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"--initdb",
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"--cache-dir", "../cache/_var_cache_apk",
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"apk-tools")
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must(cmd.Run(), "apk add apk-tools")
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// must(os.Remove("rootfs/var/cache/apk"))
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cached := append(config.Cache, "/var/cache/apk")
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var cachedParams []string
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for _, c := range cached {
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cacheDir := path.Join("./cache", strings.ReplaceAll(c, "/", "_"))
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must(os.MkdirAll(cacheDir, 0700))
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cachedParams = append(cachedParams, "--bind", cacheDir, c)
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}
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tmp, err := os.MkdirTemp("", "repro-run-")
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must(err)
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params := append(
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[]string{"--bind", "./rootfs", "/",
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"--ro-bind", ".", "/src",
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"--bind", tmp, "/work",
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"--chdir", "/work",
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},
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cachedParams...)
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log.Println(strings.Join(params, " "))
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cmd = exec.Command("bwrap", append(params,
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"apk", "add", "busybox", "busybox-suid", "libc-utils", "alpine-baselayout", "alpine-conf", "alpine-release")...)
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// cmd.Stdout = os.Stdout
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// cmd.Stderr = os.Stderr
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must(cmd.Run())
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cmd = exec.Command("bwrap", append(params, strings.Split(config.Command, " ")...)...)
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cmd.Stdout = os.Stdout
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cmd.Stdin = os.Stdin
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cmd.Stderr = os.Stderr
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must(cmd.Run())
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}
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func must(err error, where ...string) {
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if err != nil {
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log.Fatal(err, where)
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}
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}
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