chore: addd trimpath flag to make build more reproducible

Signed-off-by: Carlos Panato <ctadeu@gmail.com>

Author: cpanato

Dockerfile

@@ -51,7 +51,7 @@ ARG ldflags
 RUN --mount=type=cache,target=/root/.cache/go-build \
     --mount=type=cache,target=/go/pkg/mod \
     CGO_ENABLED=0 GOOS=linux GOARCH=${ARCH} \
-    go build -ldflags "${ldflags} -extldflags '-static'" \
+    go build -trimpath -ldflags "${ldflags} -extldflags '-static'" \
     -o manager ${package}
 
 # Production image

Makefile

@@ -179,15 +179,15 @@ kind-cluster: ## Create a new kind cluster designed for testing with Tilt
 
 .PHONY: manager-core
 manager-core: ## Build core manager binary
-	go build -ldflags "$(LDFLAGS)" -o $(BIN_DIR)/manager sigs.k8s.io/cluster-api
+	go build -trimpath -ldflags "$(LDFLAGS)" -o $(BIN_DIR)/manager sigs.k8s.io/cluster-api
 
 .PHONY: manager-kubeadm-bootstrap
 manager-kubeadm-bootstrap: ## Build kubeadm bootstrap manager
-	go build -ldflags "$(LDFLAGS)" -o $(BIN_DIR)/kubeadm-bootstrap-manager sigs.k8s.io/cluster-api/bootstrap/kubeadm
+	go build -trimpath -ldflags "$(LDFLAGS)" -o $(BIN_DIR)/kubeadm-bootstrap-manager sigs.k8s.io/cluster-api/bootstrap/kubeadm
 
 .PHONY: manager-kubeadm-control-plane
 manager-kubeadm-control-plane: ## Build kubeadm control plane manager
-	go build -ldflags "$(LDFLAGS)" -o $(BIN_DIR)/kubeadm-control-plane-manager sigs.k8s.io/cluster-api/controlplane/kubeadm
+	go build -trimpath -ldflags "$(LDFLAGS)" -o $(BIN_DIR)/kubeadm-control-plane-manager sigs.k8s.io/cluster-api/controlplane/kubeadm
 
 .PHONY: managers
 managers: ## Build all managers
@@ -197,31 +197,31 @@ managers: ## Build all managers
 
 .PHONY: clusterctl
 clusterctl: ## Build clusterctl binary
-	go build -ldflags "$(LDFLAGS)" -o $(BIN_DIR)/clusterctl sigs.k8s.io/cluster-api/cmd/clusterctl
+	go build -trimpath -ldflags "$(LDFLAGS)" -o $(BIN_DIR)/clusterctl sigs.k8s.io/cluster-api/cmd/clusterctl
 
 $(SETUP_ENVTEST): $(TOOLS_DIR)/go.mod # Build setup-envtest from tools folder.
-	cd $(TOOLS_DIR); go build -tags=tools -o $(BIN_DIR)/setup-envtest sigs.k8s.io/controller-runtime/tools/setup-envtest
+	cd $(TOOLS_DIR); go build -trimpath -tags=tools -o $(BIN_DIR)/setup-envtest sigs.k8s.io/controller-runtime/tools/setup-envtest
 
 $(CONTROLLER_GEN): $(TOOLS_DIR)/go.mod # Build controller-gen from tools folder.
-	cd $(TOOLS_DIR); go build -tags=tools -o $(BIN_DIR)/controller-gen sigs.k8s.io/controller-tools/cmd/controller-gen
+	cd $(TOOLS_DIR); go build -trimpath -tags=tools -o $(BIN_DIR)/controller-gen sigs.k8s.io/controller-tools/cmd/controller-gen
 
 $(GOTESTSUM): $(TOOLS_DIR)/go.mod # Build gotestsum from tools folder.
-	cd $(TOOLS_DIR); go build -tags=tools -o $(BIN_DIR)/gotestsum gotest.tools/gotestsum
+	cd $(TOOLS_DIR); go build -trimpath -tags=tools -o $(BIN_DIR)/gotestsum gotest.tools/gotestsum
 
 $(CONVERSION_GEN): $(TOOLS_DIR)/go.mod
-	cd $(TOOLS_DIR); go build -tags=tools -o $(BIN_DIR)/conversion-gen k8s.io/code-generator/cmd/conversion-gen
+	cd $(TOOLS_DIR); go build -trimpath -tags=tools -o $(BIN_DIR)/conversion-gen k8s.io/code-generator/cmd/conversion-gen
 
 $(CONVERSION_VERIFIER): $(TOOLS_DIR)/go.mod
 	cd $(TOOLS_DIR); go build -tags=tools -o $(BIN_DIR)/conversion-verifier sigs.k8s.io/cluster-api/hack/tools/conversion-verifier
 
 $(GO_APIDIFF): $(TOOLS_DIR)/go.mod
-	cd $(TOOLS_DIR) && go build -tags=tools -o $(GO_APIDIFF_BIN) github.com/joelanford/go-apidiff
+	cd $(TOOLS_DIR) && go build -trimpath -tags=tools -o $(GO_APIDIFF_BIN) github.com/joelanford/go-apidiff
 
 $(ENVSUBST): $(TOOLS_DIR)/go.mod
-	cd $(TOOLS_DIR) && go build -tags=tools -o $(ENVSUBST_BIN) github.com/drone/envsubst/v2/cmd/envsubst
+	cd $(TOOLS_DIR) && go build -trimpath -tags=tools -o $(ENVSUBST_BIN) github.com/drone/envsubst/v2/cmd/envsubst
 
 $(YQ): $(TOOLS_DIR)/go.mod
-	cd $(TOOLS_DIR) && go build -tags=tools -o $(YQ_BIN) github.com/mikefarah/yq/v4
+	cd $(TOOLS_DIR) && go build -trimpath -tags=tools -o $(YQ_BIN) github.com/mikefarah/yq/v4
 
 $(KUSTOMIZE): # Download kustomize using hack script into tools folder.
 	hack/ensure-kustomize.sh