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Docker Bakeãšã¯?
Docker Bake ã¯ãCompose ãã©ã³ã¿ã€ã ç°å¢ã®ç®¡çãç°¡çŽ åããã®ãšåæ§ã«ãDocker ãã«ããå¹çåãããªãŒã±ã¹ãã¬ãŒã·ã§ã³ ããŒã«ã§ãã Bake ã䜿çšãããšããã«ãã¹ããŒãžãšãããã€ç°å¢ã宣èšåãã¡ã€ã«ã§å®çŸ©ã§ãããããè€éãªãã«ãã®ç®¡çã容æã«ãªããŸãã ãŸããBuildKit ã®äžŠååããã³æé©åæ©èœã掻çšããŠããã«ãæéãççž®ããŸãã
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Docker Bake ã®äž»ãªå©ç¹
- ã·ã³ãã«ã: Docker ãã«ã ã³ãã³ããšã¹ã¯ãªããã®è€éãªãã§ãŒã³ã 1 ã€ã®
docker buildx bakeã³ãã³ãã«çœ®ãæããªãããçè§£ãšå€æŽã容æãªãããŒãžã§ã³ç®¡çãããæç¢ºãªæ§æãã¡ã€ã«ãç¶æããŸãã - æè»æ§: HCL æ§æãšãããªãã¯ã¹ ãã«ããéããŠé«åºŠãªãã«ã ããžãã¯ã衚çŸããããŸããŸãªç°å¢ãèŠä»¶ã«é©å¿ããåçæ§æãå¯èœã«ããªãããé«åºŠãªãŠãŒã¹ ã±ãŒã¹åãã®ã«ã¹ã¿ã æ©èœããµããŒãããŸãã
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- ããã©ãŒãã³ã¹:ç¬ç«ãããã«ããèªåçã«äžŠååããã³ã³ããã¹ãéè€æé€ãšã€ã³ããªãžã§ã³ããã£ãã·ã³ã°ã«ããåé·ãªæäœãæé€ããè€éãªãã«ãã€ã¡ãŒãžã¯ãŒã¯ãããŒã®ãã«ãæéãå€§å¹ ã«ççž®ããŸãã

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1ã ã¢ãã¬ããšã€ã¡ãŒãžããŒã«ãªãŒ
Docker Bake ã¯ãéçºè ã 1 ã€ã®ãœãŒã¹ ãªããžããªããè€æ°ã®é¢é£ãã Docker ã€ã¡ãŒãžãå¹ççã«ç®¡çããã³æ§ç¯ããã®ã«åœ¹ç«ã¡ãŸãã ããã«ãå ±ææ§æãšèªååãããäŸåé¢ä¿åŠçãæŽ»çšããŠãçµç¹ã®æšæºãé©çšã§ããŸãã
- éçºå¹ç: ããŒã ã¯ã1 ã€ã®ãªããžããªå ã®æ°åãŸãã¯æ°çŸã®ãã€ã¯ããµãŒãã¹éã§äžè²«ãããã«ã ããžãã¯ãç¶æã§ãããããæ§æã®ããªãããšã¡ã³ããã³ã¹ã®ãªãŒããŒããããåæžãããŸãã
- ãªãœãŒã¹ã®æé©å: å ±æããŒã¹ã€ã¡ãŒãžãšã³ã³ããã¹ãã¯èªåçã«éè€æé€ãããããããã«ãæéãšã¹ãã¬ãŒãžã³ã¹ããå€§å¹ ã«åæžãããŸãã
- æšæºåïŒ ç¶æ¿ãããæ§æãéããŠçµç¹ã®æšæºãé©çšãããã¹ãŠã®ãµãŒãã¹ãã»ãã¥ãªãã£ãã¿ã°ä»ããããã³ãã¹ãã®èŠä»¶ã«åŸã£ãŠããããšã確èªããŸãã
- 倿Žç®¡ç: ãã«ãæ§æã®ä¿¡é Œã§ããå¯äžã®æ å ±æºã«ãããåºæ¬ã€ã¡ãŒãžã®æŽæ°ãã»ãã¥ãªã㣠ããããªã©ãçµç¹å šäœã®å€æŽãç°¡åã«å®è£ ã§ããŸãã
2ã ãŠãŒã¶ãŒãäœæãã
Docker Bake ã¯ãæ¢åã® docker-compose.yml ãã¡ã€ã«ãšã®ã·ãŒã ã¬ã¹ãªäºææ§ãæäŸããçŸåšã®èšå®ãçŽæ¥äœ¿çšã§ããŸãã æ¢åã® Compose ãŠãŒã¶ãŒã¯ãæå°éã®åŽåã§ Bake ã®äœ¿çšãéå§ã§ããŸãã
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- éçºã®äžè²«æ§: ããŒã«ã«éçº (compose çµç±) ãšæ¬çªãã«ã (Bake çµç±) ã®äž¡æ¹ã«åãèšå®ã䜿çšããŠããèªåã®ãã·ã³ã§åäœããããšããåé¡ãè§£æ¶ããŸãã
- 匷åãããæ©èœ: ãããªãã¯ã¹ ãã«ãã HCL åŒãªã©ã®åŒ·åãªæ©èœã«ã¢ã¯ã»ã¹ããªãããäœ¿ãæ £ãã Compose æ§æãšã®äºææ§ãç¶æããŸãã
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3ã è€éãªãã«ãæ§æ
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- ã¯ãã¹ãã©ãããã©ãŒã ã®äºææ§: ãããªãã¯ã¹ãã«ãã䜿çšãããšãããŒã ã¯è€æ°ã®ã¢ãŒããã¯ãã£ãOSããŒãžã§ã³ãäŸåé¢ä¿ã®çµã¿åããã«ããããã«ãã1ã€ã®æ§æããå¹ççã«ç®¡çã§ããŸãã
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4ã Docker ãã«ã ã¯ã©ãŠã
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context, output, cache-from, cache-to, dockerfile, secret--allow fs=<path|*>â äœæ¥ãã£ã¬ã¯ããªã®å€éšã«ãããã¡ã€ã«ãžã®èªã¿åãããã³æžã蟌ã¿ã¢ã¯ã»ã¹æš©ãä»äžããŸãã--allow fs.read=<path|*>â äœæ¥ãã£ã¬ã¯ããªã®å€éšã«ãããã¡ã€ã«ãžã®èªã¿åãã¢ã¯ã»ã¹æš©ãä»äžããŸãã--allow fs.write=<path|*>â äœæ¥ãã£ã¬ã¯ããªã®å€éšã«ãããã¡ã€ã«ãžã®æžã蟌ã¿ã¢ã¯ã»ã¹æš©ãä»äžããŸãã
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target "app" {
attest = [
{ type = "provenance", mode = "max" },
{ type = "sbom", disabled = true}
]
cache-from = [
{ type = "registry", ref = "user/app:cache" },
{ type = "local", src = "path/to/cache"}
]
cache-to = [
{ type = "local", dest = "path/to/cache" },
]
output = [
{ type = "oci", dest = "../out.tar" },
{ type = "local", dest="../out"}
]
secret = [
{ id = "mysecret", src = "path/to/secret" },
{ id = "mysecret2", env = "TOKEN" },
]
ssh = [
{ id = "default" },
{ id = "key", paths = ["path/to/key"] },
]
}
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target "app-dev" {
attest = [
{ type = "provenance", mode = "min" },
{ type = "sbom", disabled = true}
]
}
target "app-prod" {
inherits = ["app-dev"]
attest = [
{ type = "provenance", mode = "max" },
]
}
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variable "FOO" {
validation {
condition = FOO != ""
error_message = "FOO is required."
}
}
target "default" {
args = {
FOO = FOO
}
}
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variable "FOO" {
validation {
condition = FOO != ""
error_message = "FOO is required."
}
validation {
condition = strlen(FOO) > 4
error_message = "FOO must be longer than 4 characters."
}
}
target "default" {
args = {
FOO = FOO
}
}
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variable "FOO" {}
variable "BAR" {
validation {
condition = FOO != ""
error_message = "BAR requires FOO to be set."
}
}
target "default" {
args = {
BAR = BAR
}
}
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