optimize dockerfile

Author: ilia-medvedev-codefresh

v1/.dockerignore

@@ -0,0 +1,8 @@
+.e2e/
+.devspace/
+devspace_start.sh
+devspace.yaml
+Dockerfile
+Dockerfile.dev
+plugin.yaml
+README.yaml

v1/Dockerfile

@@ -4,12 +4,15 @@ FROM golang:1.18 as builder
 # Make sure we use go modules
 WORKDIR vcluster
 
-# Copy the Go Modules manifests
-COPY . .
+COPY go.mod .
+COPY go.sum .
 
 # Install dependencies
 RUN go mod vendor
 
+# Copy the Go Modules manifests
+COPY . .
+
 # Build cmd
 RUN CGO_ENABLED=0 GO111MODULE=on go build -mod vendor -o /plugin main.go