Change build commands to use vendoring.

Makefile

@@ -57,36 +57,38 @@ mock_gen:
 
 .PHONY: test
 test:
-	go test -race -covermode=atomic -coverprofile=konnectivity.out ./... && go tool cover -html=konnectivity.out -o=konnectivity.html
+	go test -mod=vendor -race -covermode=atomic -coverprofile=konnectivity.out ./... && go tool cover -html=konnectivity.out -o=konnectivity.html
 	cd konnectivity-client && go test -race -covermode=atomic -coverprofile=client.out ./... && go tool cover -html=client.out -o=client.html
 
 .PHONY: test-integration
 test-integration: build
-	go test -race ./tests -agent-path $(PWD)/bin/proxy-agent
+	go test -mod=vendor -race ./tests -agent-path $(PWD)/bin/proxy-agent
 
 ## --------------------------------------
 ## Binaries
 ## --------------------------------------
 
-SOURCE = $(shell find . -name \*.go)
-
 bin:
 	mkdir -p bin
 
 .PHONY: build
 build: bin/proxy-agent bin/proxy-server bin/proxy-test-client bin/http-test-server
 
-bin/proxy-agent: bin $(SOURCE)
-	GO111MODULE=on go build -o bin/proxy-agent cmd/agent/main.go
+.PHONY: bin/proxy-agent
+bin/proxy-agent:
+	GO111MODULE=on go build -mod=vendor -o bin/proxy-agent cmd/agent/main.go
 
-bin/proxy-test-client: bin $(SOURCE)
-	GO111MODULE=on go build -o bin/proxy-test-client cmd/test-client/main.go
+.PHONY: bin/proxy-test-client
+bin/proxy-test-client:
+	GO111MODULE=on go build -mod=vendor -o bin/proxy-test-client cmd/test-client/main.go
 
-bin/http-test-server: bin $(SOURCE)
-	GO111MODULE=on go build -o bin/http-test-server cmd/test-server/main.go
+.PHONY: bin/http-test-server
+bin/http-test-server:
+	GO111MODULE=on go build -mod=vendor -o bin/http-test-server cmd/test-server/main.go
 
-bin/proxy-server: bin $(SOURCE)
-	GO111MODULE=on go build -o bin/proxy-server cmd/server/main.go
+.PHONY: bin/proxy-server
+bin/proxy-server:
+	GO111MODULE=on go build -mod=vendor -o bin/proxy-server cmd/server/main.go
 
 ## --------------------------------------
 ## Linting

artifacts/images/agent-build.Dockerfile

@@ -8,22 +8,21 @@ WORKDIR /go/src/sigs.k8s.io/apiserver-network-proxy
 COPY go.mod go.mod
 COPY go.sum go.sum
 
-# This is required before go mod download because we have a
-# replace directive for konnectivity-client in go.mod
-# The download will fail without the directory present
+# We have a replace directive for konnectivity-client in go.mod
 COPY konnectivity-client/ konnectivity-client/
 
-# Cache dependencies
-RUN go mod download
+# Copy vendored modules
+COPY vendor/ vendor/
 
 # Copy the sources
 COPY pkg/    pkg/
 COPY cmd/    cmd/
 COPY proto/  proto/
 
+
 # Build
 ARG ARCH
-RUN CGO_ENABLED=0 GOOS=linux GOARCH=${ARCH} go build -v -a -ldflags '-extldflags "-static"' -o proxy-agent sigs.k8s.io/apiserver-network-proxy/cmd/agent
+RUN CGO_ENABLED=0 GOOS=linux GOARCH=${ARCH} go build -mod=vendor -v -a -ldflags '-extldflags "-static"' -o proxy-agent sigs.k8s.io/apiserver-network-proxy/cmd/agent
 
 # Copy the loader into a thin image
 FROM gcr.io/distroless/static-debian11

artifacts/images/server-build.Dockerfile

@@ -8,13 +8,11 @@ WORKDIR /go/src/sigs.k8s.io/apiserver-network-proxy
 COPY go.mod go.mod
 COPY go.sum go.sum
 
-# This is required before go mod download because we have a
-# replace directive for konnectivity-client in go.mod
-# The download will fail without the directory present
+# We have a replace directive for konnectivity-client in go.mod
 COPY konnectivity-client/ konnectivity-client/
 
-# Cache dependencies
-RUN go mod download
+# Copy vendored modules
+COPY vendor/ vendor/
 
 # Copy the sources
 COPY pkg/    pkg/
@@ -23,7 +21,7 @@ COPY proto/  proto/
 
 # Build
 ARG ARCH
-RUN CGO_ENABLED=0 GOOS=linux GOARCH=${ARCH} go build -v -a -ldflags '-extldflags "-static"' -o proxy-server sigs.k8s.io/apiserver-network-proxy/cmd/server
+RUN CGO_ENABLED=0 GOOS=linux GOARCH=${ARCH} go build -mod=vendor -v -a -ldflags '-extldflags "-static"' -o proxy-server sigs.k8s.io/apiserver-network-proxy/cmd/server
 
 # Copy the loader into a thin image
 FROM gcr.io/distroless/static-debian11

artifacts/images/test-client-build.Dockerfile

@@ -8,13 +8,11 @@ WORKDIR /go/src/sigs.k8s.io/apiserver-network-proxy
 COPY go.mod go.mod
 COPY go.sum go.sum
 
-# This is required before go mod download because we have a
-# replace directive for konnectivity-client in go.mod
-# The download will fail without the directory present
+# We have a replace directive for konnectivity-client in go.mod
 COPY konnectivity-client/ konnectivity-client/
 
-# Cache dependencies
-RUN go mod download
+# Copy vendored modules
+COPY vendor/ vendor/
 
 # Copy the sources
 COPY pkg/    pkg/
@@ -23,7 +21,7 @@ COPY proto/  proto/
 
 # Build
 ARG ARCH
-RUN CGO_ENABLED=0 GOOS=linux GOARCH=${ARCH} go build -v -a -ldflags '-extldflags "-static"' -o proxy-test-client sigs.k8s.io/apiserver-network-proxy/cmd/test-client
+RUN CGO_ENABLED=0 GOOS=linux GOARCH=${ARCH} go build -mod=vendor -v -a -ldflags '-extldflags "-static"' -o proxy-test-client sigs.k8s.io/apiserver-network-proxy/cmd/test-client
 
 # Copy the loader into a thin image
 FROM gcr.io/distroless/static-debian11

artifacts/images/test-server-build.Dockerfile

@@ -8,22 +8,19 @@ WORKDIR /go/src/sigs.k8s.io/apiserver-network-proxy
 COPY go.mod go.mod
 COPY go.sum go.sum
 
-
-# This is required before go mod download because we have a
-# replace directive for konnectivity-client in go.mod
-# The download will fail without the directory present
+# We have a replace directive for konnectivity-client in go.mod
 COPY konnectivity-client/ konnectivity-client/
 
-# Cache dependencies
-RUN go mod download
+# Copy vendored modules
+COPY vendor/ vendor/
 
 # Copy the sources
 COPY pkg/    pkg/
 COPY cmd/    cmd/
 
 # Build
 ARG ARCH
-RUN CGO_ENABLED=0 GOOS=linux GOARCH=${ARCH} go build -v -a -ldflags '-extldflags "-static"' -o http-test-server sigs.k8s.io/apiserver-network-proxy/cmd/test-server
+RUN CGO_ENABLED=0 GOOS=linux GOARCH=${ARCH} go build -mod=vendor -v -a -ldflags '-extldflags "-static"' -o http-test-server sigs.k8s.io/apiserver-network-proxy/cmd/test-server
 
 # Copy the loader into a thin image
 FROM gcr.io/distroless/static-debian11