From 93f30053ef8bc5e34567835b58de960969e87f1f Mon Sep 17 00:00:00 2001
From: unkin-agent <unkin-agent@unkin.net>
Date: Fri, 2 Oct 2026 23:38:44 +1000
Subject: [PATCH] ci: use gobuilder image + S3 build cache for Go steps

Go compile steps ran on vanilla golang:1.25 with no shared cache,
paying full module/build cost every run. Switch to the estate
gobuilder image (plugin binary baked in) and wire GOCACHEPROG to the
shared S3-backed cache; best-effort, degrades to misses on S3 issues.

- pre-commit, test: image -> gobuilder:0.1.2-alma9
- add GOCACHE_* env + AWS creds from org secrets
- GOCACHEPROG uses absolute /tmp/gocache cache-dir
- add backend_options.kubernetes resources + serviceAccountName
---
 .woodpecker/pre-commit.yaml | 23 ++++++++++++++++++++++-
 .woodpecker/test.yaml       | 23 ++++++++++++++++++++++-
 2 files changed, 44 insertions(+), 2 deletions(-)

diff --git a/.woodpecker/pre-commit.yaml b/.woodpecker/pre-commit.yaml
index 2dd88b8..ee07e40 100644
--- a/.woodpecker/pre-commit.yaml
+++ b/.woodpecker/pre-commit.yaml
@@ -3,7 +3,28 @@ when:
 
 steps:
   - name: pre-commit
-    image: golang:1.25
+    image: artifactapi.k8s.syd1.au.unkin.net/docker-internal/gobuilder:0.1.2-alma9
     commands:
       - test -z "$(gofmt -l .)"
       - go vet ./...
+    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-age-api
+      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
+    backend_options:
+      kubernetes:
+        serviceAccountName: default
+        resources:
+          requests:
+            memory: 512Mi
+            cpu: 1
+          limits:
+            memory: 2Gi
+            cpu: 2
diff --git a/.woodpecker/test.yaml b/.woodpecker/test.yaml
index ce25edf..d23e0f7 100644
--- a/.woodpecker/test.yaml
+++ b/.woodpecker/test.yaml
@@ -3,6 +3,27 @@ when:
 
 steps:
   - name: test
-    image: golang:1.25
+    image: artifactapi.k8s.syd1.au.unkin.net/docker-internal/gobuilder:0.1.2-alma9
     commands:
       - go test -race -count=1 ./...
+    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-age-api
+      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
+    backend_options:
+      kubernetes:
+        serviceAccountName: default
+        resources:
+          requests:
+            memory: 1Gi
+            cpu: 1
+          limits:
+            memory: 4Gi
+            cpu: 2