build: fixing image build

Due to recent changes, the plugin image build has failed.
The following changes has been added:
1. Fixing the command name in the DaemonSet spec
2. Pin golang to 1.20
3. Running the go build command with the right arguments
4. changing CGO_ENABLED=0 - The binary failed to execute
and complains about GLIBC_2.32 not found.
Running with CGO_ENABLED=0 build a binary that doesn't depend on glibc:
golang/go#57328 (comment)

Signed-off-by: Talor Itzhak <[email protected]>

Author: Tal-or

Dockerfile

@@ -1,3 +1,3 @@
-FROM golang
+FROM golang:1.20
 COPY build/bin/mixedcpu /bin/mixedcpu
-ENTRYPOINT [ "/bin/mixedcpu" ]
+ENTRYPOINT [ "/bin/mixedcpu" ]

Makefile

@@ -40,7 +40,7 @@ COVERAGE_PATH := $(BUILD_PATH)/coverage
 PLUGIN = $(BIN_PATH)/mixedcpu
 
 COMMONENVVAR = GOOS=linux GOARCH=amd64
-BUILDENVVAR = CGO_ENABLED=1
+BUILDENVVAR = CGO_ENABLED=0
 RUNTIME ?= docker
 REPOOWNER ?= openshift-kni
 IMAGENAME ?= mixed-cpu-node-plugin
@@ -83,7 +83,7 @@ mkdir:
 	mkdir -p build/bin || true
 
 build-plugin: mkdir
-	$(GO_BUILD) -o $(PLUGIN) ./cmd/main.go
+	$(COMMONENVVAR) $(BUILDENVVAR) $(GO_BUILD) -o $(PLUGIN) ./cmd/main.go
 
 build-check:
 	$(Q)$(GO_BUILD) -v $(GO_MODULES)

deployment/kustomize/base/daemonset.yaml

@@ -13,10 +13,10 @@ spec:
     spec:
       containers:
           - name: mixedcpus-plugin
-            image: quay.io/titzhak/mixedcpus
+            image: quay.io/titzhak/mixed-cpu-node-plugin
             imagePullPolicy: Always
             command:
-              - /bin/mixedcpus
+              - /bin/mixedcpu
             args:
               - --name=mixedcpus
               - --idx=99