fix(go): disable cgo

ref: #75, #74

Author: innobead

.github/workflows/build.yaml

@@ -8,7 +8,7 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
       - name: Checkout code
         uses: actions/checkout@v2

.github/workflows/release-image.yaml

@@ -8,7 +8,7 @@ on:
 jobs:
   release:
     name: Release images
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     needs: []
     steps:
       - name: Checkout code

.github/workflows/release-kernel.yaml

@@ -7,7 +7,7 @@ on:
 jobs:
   release:
     name: Release kernel images
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     needs: []
     steps:
       - name: Checkout code

.github/workflows/release.yaml

@@ -8,7 +8,7 @@ on:
 jobs:
   release:
     name: Release
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     needs: []
     steps:
       - name: Checkout code

Makefile

@@ -63,8 +63,8 @@ env: ## Prepare build env
 .PHONY: build
 build: env format ## Build executables (linux/amd64 supported only)
 	mkdir -p $(BUILD_DIR)
-	GOOS=linux GOARCH=amd64 go build -o $(BUILD_DIR)/kubefire-linux-amd64 $(GO_LDFLAGS) ./cmd/kubefire
-	GOOS=linux GOARCH=arm64 go build -o $(BUILD_DIR)/kubefire-linux-arm64 $(GO_LDFLAGS) ./cmd/kubefire
+	GOOS=linux GOARCH=amd64 CGO_ENABLED=0 go build -o $(BUILD_DIR)/kubefire-linux-amd64 $(GO_LDFLAGS) ./cmd/kubefire
+	GOOS=linux GOARCH=arm64 CGO_ENABLED=0 go build -o $(BUILD_DIR)/kubefire-linux-arm64 $(GO_LDFLAGS) ./cmd/kubefire
 
 .PHONY: build-cni
 build-cni: ## Build CNI executables