fix: reorder image tags to prioritize extension version

Switch extension version and PostgreSQL major in the tag.
Compatibilities (pg major and distro) are conventionally at the end of a
name.

Signed-off-by: Francesco Canovai <[email protected]>

Author: fcanovai

README.md

@@ -30,22 +30,22 @@ Currently:
 Each extension image tag follows this format:
 
 ```
-<extension-name>:<pg_version>-<ext_version>-<timestamp>-<distro>
+<extension-name>:<ext_version>-<timestamp>-<pg_version>-<distro>
 ```
 
 **Example:**
 Building `pgvector` version `0.8.1` on PostgreSQL `18.0` for the `trixie`
 distro, with build timestamp `202509101200`, results in:
 
 ```
-pgvector:18.0-0.8.1-202509101200-trixie
+pgvector:0.8.1-202509101200-18-trixie
 ```
 
 For convenience, **rolling tags** should also be published:
 
 ```
-pgvector:18.0-0.8.1-trixie
-pgvector:18-0.8.1-trixie
+pgvector:0.8.1-18-trixie
+pgvector:0.8.1-18-trixie
 ```
 
 This scheme ensures:

docker-bake.hcl

@@ -46,11 +46,11 @@ target "default" {
 
   dockerfile = "Dockerfile"
   context = "${metadata.name}/"
-  name = "${metadata.name}-${pgVersion}-${sanitize(getExtensionVersion(distro, pgVersion))}-${distro}"
+  name = "${metadata.name}-${sanitize(getExtensionVersion(distro, pgVersion))}-${pgVersion}-${distro}"
 
   tags = [
-    "${getImageName(fullname)}:${pgVersion}-${getExtensionVersion(distro, pgVersion)}-${distro}",
-    "${getImageName(fullname)}:${pgVersion}-${getExtensionVersion(distro, pgVersion)}-${formatdate("YYYYMMDDhhmm", now)}-${distro}",
+    "${getImageName(fullname)}:${getExtensionVersion(distro, pgVersion)}-${pgVersion}-${distro}",
+    "${getImageName(fullname)}:${getExtensionVersion(distro, pgVersion)}-${formatdate("YYYYMMDDhhmm", now)}-${pgVersion}-${distro}",
   ]
 
   args = {
@@ -70,8 +70,8 @@ target "default" {
     "index,manifest:org.opencontainers.image.version=${getExtensionVersion(distro, pgVersion)}",
     "index,manifest:org.opencontainers.image.revision=${revision}",
     "index,manifest:org.opencontainers.image.vendor=${authors}",
-    "index,manifest:org.opencontainers.image.title=${metadata.name} ${pgVersion}-${getExtensionVersion(distro, pgVersion)} ${distro}",
-    "index,manifest:org.opencontainers.image.description=A ${metadata.name} ${pgVersion}-${getExtensionVersion(distro, pgVersion)} container image",
+    "index,manifest:org.opencontainers.image.title=${metadata.name} ${getExtensionVersion(distro, pgVersion)} ${pgVersion} ${distro}",
+    "index,manifest:org.opencontainers.image.description=A ${metadata.name} ${getExtensionVersion(distro, pgVersion)} container image for PostgreSQL ${pgVersion} on ${distro}",
     "index,manifest:org.opencontainers.image.documentation=${url}",
     "index,manifest:org.opencontainers.image.authors=${authors}",
     "index,manifest:org.opencontainers.image.licenses=Apache-2.0",
@@ -85,8 +85,8 @@ target "default" {
     "org.opencontainers.image.version" = "${getExtensionVersion(distro, pgVersion)}",
     "org.opencontainers.image.revision" = "${revision}",
     "org.opencontainers.image.vendor" = "${authors}",
-    "org.opencontainers.image.title" = "${metadata.name} ${pgVersion}-${getExtensionVersion(distro, pgVersion)} ${distro}",
-    "org.opencontainers.image.description" = "A ${metadata.name} ${pgVersion}-${getExtensionVersion(distro, pgVersion)} container image",
+    "org.opencontainers.image.title" = "${metadata.name} ${getExtensionVersion(distro, pgVersion)} ${pgVersion} ${distro}",
+    "org.opencontainers.image.description" = "A ${metadata.name} ${getExtensionVersion(distro, pgVersion)} container image for PostgreSQL ${pgVersion} on ${distro}",
     "org.opencontainers.image.documentation" = "${url}",
     "org.opencontainers.image.authors" = "${authors}",
     "org.opencontainers.image.licenses" = "Apache-2.0",