Fix variables incorrectly passed to 'go build'

Author: ashmckenzie

build/Dockerfile

@@ -7,8 +7,8 @@ ARG DATE
 
 COPY / /golangci
 WORKDIR /golangci
-RUN APP_VERSION=${VERSION#v} \
-    CGO_ENABLED=0 \
+RUN APP_VERSION=${VERSION#v}; \
+    CGO_ENABLED=0; \
     go build -trimpath -ldflags "-s -w -X main.version=$APP_VERSION -X main.commit=$SHORT_COMMIT -X main.date=$DATE" -o golangci-lint ./cmd/golangci-lint/main.go
 
 # stage 2