build: force rebuilding without CGo

Disable building with CGo support, so that only native Golang functions
are used. This makes it possible to build the executables in one
container, and run them in a distroless container.

Fore rebuilding all components with `-a` in the `Makefile`, this
prevents including artifacts that may have been built outside the
contains with CGo enabled.

Signed-off-by: Niels de Vos <[email protected]>

Dockerfile

@@ -4,7 +4,7 @@ FROM quay.io/projectquay/golang:1.20 as builder
 # Copy the contents of the repository
 ADD . /workspace/go/src/github.com/csi-addons/kubernetes-csi-addons
 
-ENV GOPATH=/workspace/go
+ENV GOPATH=/workspace/go CGO_ENABLED=0
 WORKDIR /workspace/go/src/github.com/csi-addons/kubernetes-csi-addons
 
 # Build

Makefile

@@ -170,9 +170,9 @@ bundle-validate: container-cmd operator-sdk
 
 .PHONY: build
 build: generate fmt vet ## Build manager binary.
-	go build -ldflags '$(LDFLAGS)' -o bin/csi-addons-manager cmd/manager/main.go
-	go build -ldflags '$(LDFLAGS)' -o bin/csi-addons-sidecar sidecar/main.go
-	go build -ldflags '$(LDFLAGS)' -o bin/csi-addons ./cmd/csi-addons
+	go build -ldflags '$(LDFLAGS)' -a -o bin/csi-addons-manager cmd/manager/main.go
+	go build -ldflags '$(LDFLAGS)' -a -o bin/csi-addons-sidecar sidecar/main.go
+	go build -ldflags '$(LDFLAGS)' -a -o bin/csi-addons ./cmd/csi-addons
 
 .PHONY: run
 run: manifests generate fmt vet ## Run a controller from your host.

build/Containerfile.sidecar

@@ -4,7 +4,7 @@ FROM quay.io/projectquay/golang:1.20 as builder
 # Copy the contents of the repository
 ADD . /workspace/go/src/github.com/csi-addons/kubernetes-csi-addons
 
-ENV GOPATH=/workspace/go
+ENV GOPATH=/workspace/go CGO_ENABLED=0
 WORKDIR /workspace/go/src/github.com/csi-addons/kubernetes-csi-addons
 
 # Build the sidecar and csi-addons tool for admin usage and testing