/
images.go
72 lines (65 loc) · 1.93 KB
/
images.go
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package arch
import (
"strings"
)
// ArchBaseImages lists known compatible equivalents for amd64 images on other arches.
var ArchBaseImages = map[KnownArch]map[string]string{
ARMV8: {
"library/debian": "arm64v8/debian",
"library/alpine": "arm64v8/alpine",
"library/php": "arm64v8/php",
"library/ubuntu": "arm64v8/ubuntu",
"library/wordpress": "arm64v8/wordpress",
"library/busybox": "arm64v8/busybox",
"library/ruby": "arm64v8/ruby",
"library/httpd": "arm64v8/httpd",
"library/fedora": "arm64v8/fedora",
},
ARMV7: {
"library/opensuse": "arm32v7/opensuse",
"library/ubuntu": "arm32v7/ubuntu",
"library/alpine": "container4armhf/armhf-alpine",
"library/busybox": "container4armhf/armhf-busybox",
"library/archlinux": "armv7/armhf-archlinux",
"library/debian": "armbuild/debian",
"gentoo/stage3-amd64": "paralin/gentoo-stage3-armv7a",
},
ARMV6: {
"library/alpine": "arm32v6/alpine",
"library/openjdk": "arm32v6/openjdk",
"library/tomcat": "arm32v6/tomcat",
"library/bash": "arm32v6/bash",
"library/golang": "arm32v6/golang",
"library/postgres": "arm32v6/postgres",
"library/haproxy": "arm32v6/haproxy",
"library/busybox": "arm32v6/busybox",
},
}
// CompatibleBaseImage checks for a equivalent/compatible image for a target platform.
func CompatibleBaseImage(targetArch KnownArch, image string) (string, bool) {
if targetArch == AMD64 {
return image, true
}
if strings.HasPrefix(image, "docker.io/") {
image = image[len("docker.io/"):]
}
if ci := strings.IndexRune(image, ':'); ci > 0 {
image = image[:ci]
}
compat := KnownArchCompat[targetArch]
arches := make([]KnownArch, len(compat)+1)
arches[0] = targetArch
copy(arches[1:], compat)
for _, arch := range arches {
baseImages, ok := ArchBaseImages[arch]
if !ok {
continue
}
ti, ok := baseImages[image]
if !ok {
continue
}
return ti, true
}
return "", false
}