add build caching

.woodpecker.yml

@@ -1,5 +1,25 @@
 steps:
+  test:
+    image: golang:1.26
+    environment:
+      CGO_ENABLED: 0
+      GOOS: linux
+    commands:
+      - go test ./...
+    volumes:
+      - go_build_cache:/root/.cache/go-build
+      - go_mod_cache:/go/pkg/mod
   build:
+    image: golang:1.26
+    environment:
+      CGO_ENABLED: 0
+      GOOS: linux
+    commands:
+      - go build .
+    volumes:
+      - go_build_cache:/root/.cache/go-build
+      - go_mod_cache:/go/pkg/mod
+  deploy:
     image: docker
     commands:
       - apk add curl

Dockerfile

@@ -1,7 +1,3 @@
-FROM golang:1.26 as builder
-COPY . /castor
-RUN cd /castor && CGO_ENABLED=0 go build
-
 FROM scratch
-COPY --from=builder /castor/castor castor
+COPY ./castor castor
 CMD ["/castor"]

go.mod

@@ -1,3 +1,3 @@
 module git.yetaga.in/alazyreader/castor
 
-go 1.25.1
+go 1.26.0