Implement docker upload in the releng tools

This uses skopeo to not think about docker daemons. I, however, noticed
that the docker image we had would have totally terrible cache hits, so
I rewrote it.

Fixes: https://git.lix.systems/lix-project/lix/issues/252

Change-Id: I3c5b6c1f3ba0b9dfcac212b2148f390e0cd542b7

1 files changed, 29 insertions, 3 deletions

diff --git a/releng/environment.py b/releng/environment.py
index 58633d548..e8e7e771e 100644
--- a/releng/environment.py
+++ b/releng/environment.py
@@ -17,6 +17,21 @@ DEFAULT_STORE_URI_BITS = {
 
 
 @dataclasses.dataclass
+class DockerTarget:
+    registry_path: str
+
+    def resolve(self, version: str) -> str:
+        """Applies templates:
+        - version: the Lix version
+        """
+        return self.registry_path.format(version=version)
+
+    def registry_name(self) -> str:
+        [a, _, _] = self.registry_path.partition('/')
+        return a
+
+
+@dataclasses.dataclass
 class RelengEnvironment:
     name: str
 
@@ -26,22 +41,33 @@ class RelengEnvironment:
     docs_bucket: str
     git_repo: str
 
+    docker_targets: list[DockerTarget]
+
     def cache_store_uri(self):
         qs = DEFAULT_STORE_URI_BITS.copy()
         qs.update(self.cache_store_overlay)
         return self.cache_bucket + "?" + urllib.parse.urlencode(qs)
 
+
 STAGING = RelengEnvironment(
     name='staging',
     docs_bucket='s3://staging-docs',
     cache_bucket='s3://staging-cache',
-    cache_store_overlay={
-        'secret-key': 'staging.key'
-    },
+    cache_store_overlay={'secret-key': 'staging.key'},
     releases_bucket='s3://staging-releases',
     git_repo='ssh://git@git.lix.systems/lix-project/lix-releng-staging',
+    docker_targets=[
+        DockerTarget(
+            'git.lix.systems/lix-project/lix-releng-staging:{version}'),
+        DockerTarget(
+            'ghcr.io/lix-project/lix-releng-staging:{version}'),
+    ],
 )
 
+ENVIRONMENTS = {
+    'staging': STAGING,
+}
+
 
 @dataclasses.dataclass
 class S3Credentials: