Invalid reference format error when tagging images using Podman #35358
Description
Problem
The bootBuildImage task encounters an error configuring tags when using Podman instead of Docker.
Example config:
val registry = "example.org" val channel: String by project val latestTag = if (channel.isBlank()) "latest" else "$channel-latest" tasks { bootBuildImage { buildpacks.set(listOf("urn:cnb:builder:paketo-buildpacks/java", "gcr.io/paketo-buildpacks/health-checker:latest")) environment.set(environment.get() + mapOf("BP_HEALTH_CHECKER_ENABLED" to "true")) imageName.set("$registry/${rootProject.name}-${project.name}:${project.version}") tags.set(listOf("$registry/${rootProject.name}-${project.name}:$latestTag")) } }Error:
FAILURE: Build failed with an exception. * What went wrong: Execution failed for task ':example:bootBuildImage'. > Docker API call to 'localhost/v1.24/images/example.org/example-service:1.0.0-beta.1/tag?repo=example.org%2Fexample-service%3Abeta-latest' failed with status code 500 "Internal Server Error" and message "normalizing image: normalizing name for compat API: invalid reference format" Diagnosis
DockerApi::tag uses a single query parameter (repo) for the target reference:
The Docker Engine API accepts both repo and tag parameters, but it parses repo if tag is not specified. Podman does not currently support this behavior.
API reference: https://docs.podman.io/en/v3.2.3/_static/api.html#tag/images/operation/ImageTagLibpod
Example request (current behavior)
This fails with podman 4.5.0:
curl --unix-socket /var/run/docker.sock -v -X POST \ "http://localhost/v1.24/images/example.org/example-service:1.0.0/tag?repo=example.org%2Fexample-service%3Alatest"Podman returns the following:
{ "cause": "normalizing name for compat API: invalid reference format", "message": "normalizing image: normalizing name for compat API: invalid reference format", "response": 500 }Updated request (desired behavior)
This request includes separate repo and tag parameters and works with podman 4.5.0:
curl --unix-socket /var/run/docker.sock -v -X POST \ "http://localhost/v1.24/images/example.org/example-service:1.0.0/tag?repo=example.org%2Fexample-service&tag=latest"Workaround
import org.springframework.boot.buildpack.platform.docker.transport.HttpTransport tasks { bootBuildImage { buildpacks.set( listOf( "urn:cnb:builder:paketo-buildpacks/java", "gcr.io/paketo-buildpacks/health-checker:latest" ) ) environment.set(environment.get() + mapOf("BP_HEALTH_CHECKER_ENABLED" to "true")) imageName.set("$registry/${rootProject.name}-${project.name}:${project.version}") finalizedBy("tagLatest") } register("tagLatest") { doLast { val source = bootBuildImage.get().imageName.get() val target = object { val repo = "$registry/${rootProject.name}-${project.name}" val tag = latestTag override fun toString() = "$repo:$tag" } URIBuilder("/v1.24/images/$source/tag") .addParameter("repo", target.repo) .addParameter("tag", target.tag) .build().let { uri -> HttpTransport.create(null).post(uri).close() }.also { println("Tagged $source as $target") } } } }