move 'go mod vendor' line in Dockerfile

Author: Jooho

Dockerfile

@@ -69,7 +69,6 @@ RUN git init && \
 # Download dependiencies before copying the source so they will be cached
 COPY go.mod go.sum ./
 RUN go mod download
-RUN go mod vendor
 
 
 ###############################################################################
@@ -82,6 +81,9 @@ LABEL image="build"
 # Copy the source
 COPY . ./
 
+# Copy packages into vendor
+RUN go mod vendor
+
 # Build the binaries
 RUN go build -o puller model-serving-puller/main.go
 RUN go build -o triton-adapter model-mesh-triton-adapter/main.go