Added image inspecting and check for valid java tag

build.py

@@ -2,6 +2,7 @@
 from argparse import ArgumentParser, BooleanOptionalAction
 from datetime import datetime
 from re import search
+from sys import base_prefix
 from typing import Iterable
 import docker
 from ftbtypes import *
@@ -95,6 +96,24 @@ def get_version_by_description(modpack: ModPackManifest, version_name: str | Non
     except ValueError:
         pass
 
+def find_suitable_tag(java_repository: str, java_version: str, ver_to_tag: Callable[[str], str] = lambda x: f"{x}-jre"):
+    java_tag_version = java_version
+    while True:
+        # base_image = f"azul/zulu-openjdk:{java_version}-jre"
+        java_tag = ver_to_tag(java_tag_version)
+        try:
+            print(f"Trying for image: {java_repository} tag {java_tag}!")
+            docker.buildx_imagetools_inspect(java_repository, java_tag)
+            return java_tag
+        except Exception:
+            print(f"Potential base image {java_repository} missing tag {java_tag}!")
+        if '_' in java_tag_version:
+            java_tag_version = java_tag_version[:(java_tag_version.rfind('_'))]
+        elif '.' in java_tag_version:
+            java_tag_version = java_tag_version[:(java_tag_version.rfind('.'))]
+        else:
+            raise Exception(f"Cannot find suitable java base image version for Java {java_version}")
+
 if __name__ == "__main__":
     args = parse_arguments()
     modpack = get_modpack_manifest(args.modpack)
@@ -116,8 +135,9 @@ if __name__ == "__main__":
     # java_version = version_without_build(java_target["version"])
     print(f"Required java version is version {java_target['version']}")
     java_version = java_target["version"].replace('+', '_')
-    # base_image = f"azul/zulu-openjdk:{java_version}-jre"
+    java_repository = "eclipse-temurin"
-    base_image = f"eclipse-temurin:{java_version}-jre"
+    java_tag = find_suitable_tag(java_repository, java_version)
+    base_image = f"{java_repository}:{java_tag}"
     print(f"Using docker base image: {base_image}")
 
     repo = f"hub.cnml.de/{slug}"
@@ -126,6 +146,7 @@ if __name__ == "__main__":
         "linux/arm64" if args.arm64 else None,
         "linux/amd64" if args.amd64 else None
     ]))
+
     for platform in platforms:
         installer, checksum = get_installer(modpack, version, platform)
         tags = list(f"{ver}-{platform[(platform.rfind('/')+1):]}" for ver in semver_version_tags)

docker.py

@@ -1,11 +1,70 @@
-from subprocess import run
+from subprocess import PIPE, run
-from typing import Literal, get_args
+from typing import Literal, NotRequired, TypedDict, get_args, List
+from json import loads
 
 Platforms = Literal["linux/amd64", "linux/amd64/v2", "linux/amd64/v3", "linux/arm64", "linux/riscv64", "linux/ppc64le", "linux/s390x", "linux/386", "linux/mips64le", "linux/mips64", "linux/arm/v7", "linux/arm/v6"]
 supported_platforms: list[Platforms] = list(get_args(Platforms))
 
 Progress = Literal["auto", "plain", "tty"]
 
+class Platform(TypedDict):
+    architecture: str
+    os: str
+    variant: NotRequired[str]
+
+
+class ManifestsItem(TypedDict):
+    mediaType: str
+    digest: str
+    size: int
+    platform: Platform
+
+
+class Manifest(TypedDict):
+    schemaVersion: int
+    mediaType: str
+    digest: str
+    size: int
+    manifests: List[ManifestsItem]
+
+
+class Config(TypedDict):
+    Env: List[str]
+    Cmd: List[str]
+
+
+class Rootfs(TypedDict):
+    type: str
+    diff_ids: List[str]
+
+
+class HistoryItem(TypedDict):
+    created: str
+    created_by: str
+    empty_layer: NotRequired[bool]
+
+
+class PlatformImage(TypedDict):
+    created: str
+    architecture: str
+    variant: NotRequired[str]
+    os: str
+    config: Config
+    rootfs: Rootfs
+    history: List[HistoryItem]
+
+
+class ImagetoolsInspectResult(TypedDict):
+    name: str
+    manifest: Manifest
+    image: dict[Platform, PlatformImage]
+
+def buildx_imagetools_inspect(repository: str, tag: str) -> ImagetoolsInspectResult:
+    label = f"{repository}:{tag}"
+    process = run(["docker", "buildx", "imagetools", "inspect", label, "--format", "{{json .}}"], check=True, stdout=PIPE)
+    output = process.stdout.decode("utf-8")
+    return loads(output)
+
 def semver_tags(version: str):
     parts = version.split('.')
     return list('.'.join(parts[:i]) for i in range(1, len(parts) + 1))