add build caching

.woodpecker.yml

@@ -1,9 +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 -v .
+    volumes:
+      - go_build_cache:/root/.cache/go-build
+      - go_mod_cache:/go/pkg/mod
+  container:
     image: docker
     commands:
       - docker login -u docker -p $DOCKER_PASSWORD registry.yetaga.in
@@ -31,4 +47,4 @@ steps:
       COMPOSE_TOKEN:
         from_secret: compose_token
     when:
-      branch: "main"
+      branch: "main"