From 9aac54a4d69ed242bfa50137d31a5d1f16dd9395 Mon Sep 17 00:00:00 2001
From: unkin-agent <unkin-agent@unkin.net>
Date: Fri, 2 Oct 2026 23:50:10 +1000
Subject: [PATCH] ci: switch Go steps to gobuilder, enable S3 build cache

golang:1.25 and the stale almalinux9-gobuilder pin are replaced by
gobuilder:0.1.2-alma9 on every step that invokes the Go toolchain, with
GOCACHEPROG wired to the baked-in go-cache-plugin against the shared
S3 cache bucket.

- build, pre-commit, test: image -> gobuilder:0.1.2-alma9
- add GOCACHE_* env + AWS creds from org secrets, absolute cache-dir
- lint step (golangci-lint, no gobuilder binary) and docker buildx left untouched
---
 .woodpecker/build.yaml      | 14 +++++++++++++-
 .woodpecker/pre-commit.yaml | 14 +++++++++++++-
 .woodpecker/test.yaml       | 14 +++++++++++++-
 3 files changed, 39 insertions(+), 3 deletions(-)

diff --git a/.woodpecker/build.yaml b/.woodpecker/build.yaml
index 74123b5..8829060 100644
--- a/.woodpecker/build.yaml
+++ b/.woodpecker/build.yaml
@@ -3,7 +3,19 @@ when:
 
 steps:
   - name: build
-    image: golang:1.25
+    image: artifactapi.k8s.syd1.au.unkin.net/docker-internal/gobuilder:0.1.2-alma9
+    environment:
+      GOCACHE_S3_BUCKET: gocache
+      GOCACHE_S3_REGION: us-east-1
+      GOCACHE_S3_ENDPOINT_URL: https://s3.ceph.unkin.net
+      GOCACHE_S3_PATH_STYLE: "true"
+      GOCACHE_KEY_PREFIX: ci-pdbmux
+      GOCACHE_METRICS: "true"
+      GOCACHEPROG: go-cache-plugin --cache-dir=/tmp/gocache
+      AWS_ACCESS_KEY_ID:
+        from_secret: GOCACHE_AWS_ACCESS_KEY_ID
+      AWS_SECRET_ACCESS_KEY:
+        from_secret: GOCACHE_AWS_SECRET_ACCESS_KEY
     commands:
       - make build
     backend_options:
diff --git a/.woodpecker/pre-commit.yaml b/.woodpecker/pre-commit.yaml
index d57b508..70b39bb 100644
--- a/.woodpecker/pre-commit.yaml
+++ b/.woodpecker/pre-commit.yaml
@@ -3,7 +3,19 @@ when:
 
 steps:
   - name: pre-commit
-    image: git.unkin.net/unkin/almalinux9-gobuilder:20260606
+    image: artifactapi.k8s.syd1.au.unkin.net/docker-internal/gobuilder:0.1.2-alma9
+    environment:
+      GOCACHE_S3_BUCKET: gocache
+      GOCACHE_S3_REGION: us-east-1
+      GOCACHE_S3_ENDPOINT_URL: https://s3.ceph.unkin.net
+      GOCACHE_S3_PATH_STYLE: "true"
+      GOCACHE_KEY_PREFIX: ci-pdbmux
+      GOCACHE_METRICS: "true"
+      GOCACHEPROG: go-cache-plugin --cache-dir=/tmp/gocache
+      AWS_ACCESS_KEY_ID:
+        from_secret: GOCACHE_AWS_ACCESS_KEY_ID
+      AWS_SECRET_ACCESS_KEY:
+        from_secret: GOCACHE_AWS_SECRET_ACCESS_KEY
     commands:
       - uvx pre-commit run --all-files
     backend_options:
diff --git a/.woodpecker/test.yaml b/.woodpecker/test.yaml
index 5e179a7..85dffdf 100644
--- a/.woodpecker/test.yaml
+++ b/.woodpecker/test.yaml
@@ -18,7 +18,19 @@ steps:
             cpu: 2
 
   - name: test
-    image: golang:1.25
+    image: artifactapi.k8s.syd1.au.unkin.net/docker-internal/gobuilder:0.1.2-alma9
+    environment:
+      GOCACHE_S3_BUCKET: gocache
+      GOCACHE_S3_REGION: us-east-1
+      GOCACHE_S3_ENDPOINT_URL: https://s3.ceph.unkin.net
+      GOCACHE_S3_PATH_STYLE: "true"
+      GOCACHE_KEY_PREFIX: ci-pdbmux
+      GOCACHE_METRICS: "true"
+      GOCACHEPROG: go-cache-plugin --cache-dir=/tmp/gocache
+      AWS_ACCESS_KEY_ID:
+        from_secret: GOCACHE_AWS_ACCESS_KEY_ID
+      AWS_SECRET_ACCESS_KEY:
+        from_secret: GOCACHE_AWS_SECRET_ACCESS_KEY
     commands:
       - go test -v -race ./...
     backend_options: