Caddy dockerhub repo appears out of sync #416
Description
I was troubleshooting a failing build today when trying to update to 2.10.2 (wrong Go version).
partial build log
[1/2] STEP 2/3: ARG HE_VERSION DP_VERSION APP_VERSION
--> Using cache 4bf0a814f81714f41a6b05367971beda3b36cb320430b5b529c094db9ed1bdd9
--> 4bf0a814f817
[1/2] STEP 3/3: RUN XCADDY_DEBUG=1 xcaddy build v${APP_VERSION} --with github.com/lucaslorentz/caddy-docker-proxy/v2@v$DP_VERSION --with github.com/caddy-dns/he@v$HE_VERSION
2025/08/23 19:52:02 [INFO] absolute output file path: /usr/bin/caddy
2025/08/23 19:52:02 [INFO] Temporary folder: /tmp/buildenv_2025-08-23-1952.3707817347
2025/08/23 19:52:02 [INFO] Writing main module: /tmp/buildenv_2025-08-23-1952.3707817347/main.go
package main
import (
caddycmd "github.com/caddyserver/caddy/v2/cmd"
// plug in Caddy modules here
_ "github.com/caddyserver/caddy/v2/modules/standard"
_ "github.com/lucaslorentz/caddy-docker-proxy/v2"
_ "github.com/caddy-dns/he"
)
func main() {
caddycmd.Main()
}
2025/08/23 19:52:02 [INFO] Initializing Go module
2025/08/23 19:52:02 [INFO] exec (timeout=0s): /usr/local/go/bin/go mod init caddy
go: creating new go.mod: module caddy
go: to add module requirements and sums:
go mod tidy
2025/08/23 19:52:02 [INFO] Pinning versions
2025/08/23 19:52:02 [INFO] exec (timeout=0s): /usr/local/go/bin/go get -v github.com/caddyserver/caddy/v2@v2.10.2
go: downloading github.com/caddyserver/caddy/v2 v2.10.2
go: github.com/caddyserver/caddy/v2@v2.10.2 requires go >= 1.25 (running go 1.24.6; GOTOOLCHAIN=local)
2025/08/23 19:52:03 [FATAL] exit status 1
I moved to trying to pull the builder image from docker.io/caddy to docker.io/caddy/caddy as a sanity test, it built just fine.
partial build log
[1/2] STEP 1/3: FROM docker.io/caddy/caddy:2.10-builder-alpine AS builder
Trying to pull docker.io/caddy/caddy:2.10-builder-alpine...
Getting image source signatures
Copying blob be4f1c944bfe done |
Copying blob 8286cb4ece30 done |
Copying blob ec7d4ca09441 done |
Copying blob 18414ed0f666 done |
Copying blob 4f4fb700ef54 skipped: already exists
Copying blob 9824c27679d3 skipped: already exists
Copying blob 4a1d187e818b done |
Copying blob 90a0d7e229ea done |
Copying config d45f0dd47f done |
Writing manifest to image destination
[1/2] STEP 2/3: ARG HE_VERSION DP_VERSION APP_VERSION
--> 12e23a89914a
[1/2] STEP 3/3: RUN XCADDY_DEBUG=1 xcaddy build v${APP_VERSION} --with github.com/lucaslorentz/caddy-docker-proxy/v2@v$DP_VERSION --with github.com/caddy-dns/he@v$HE_VERSION
2025/08/23 19:52:42 [INFO] absolute output file path: /usr/bin/caddy
2025/08/23 19:52:42 [INFO] Temporary folder: /tmp/buildenv_2025-08-23-1952.3413518751
2025/08/23 19:52:42 [INFO] Writing main module: /tmp/buildenv_2025-08-23-1952.3413518751/main.go
package main
import (
caddycmd "github.com/caddyserver/caddy/v2/cmd"
// plug in Caddy modules here
_ "github.com/caddyserver/caddy/v2/modules/standard"
_ "github.com/lucaslorentz/caddy-docker-proxy/v2"
_ "github.com/caddy-dns/he"
)
func main() {
caddycmd.Main()
}
2025/08/23 19:52:42 [INFO] Initializing Go module
2025/08/23 19:52:42 [INFO] exec (timeout=0s): /usr/local/go/bin/go mod init caddy
go: creating new go.mod: module caddy
go: to add module requirements and sums:
go mod tidy
2025/08/23 19:52:42 [INFO] Pinning versions
2025/08/23 19:52:42 [INFO] exec (timeout=0s): /usr/local/go/bin/go get -v github.com/caddyserver/caddy/v2@v2.10.2
go: downloading github.com/caddyserver/caddy/v2 v2.10.2
go: downloading github.com/caddyserver/certmagic v0.24.0
go: downloading github.com/cespare/xxhash/v2 v2.3.0
go: downloading github.com/google/uuid v1.6.0
go: downloading github.com/prometheus/client_golang v1.23.0
go: downloading github.com/quic-go/quic-go v0.54.0
go: downloading go.uber.org/zap v1.27.0
When i checked https://hub.docker.com/_/caddy i noticed the images there had last been updated 11 days ago, explaining why they wouldn't have the new Go Version required to build 2.10.1/2.
I'm not sure if I'm just adopting too early or if what updates the official images has stopped.