Remove unnecessary "go mod verify"

Fixes #2538

golang/content.md

@@ -21,7 +21,7 @@ WORKDIR /usr/src/app
 
 # pre-copy/cache go.mod for pre-downloading dependencies and only redownloading them in subsequent builds if they change
 COPY go.mod go.sum ./
-RUN go mod download && go mod verify
+RUN go mod download
 
 COPY . .
 RUN go build -v -o /usr/local/bin/app ./...