Set GOPRIVATE environment variable

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.16-alpine
+FROM golang:1.17-alpine
 
 ENV TZ=Europe/Moscow
 ENV TERM=xterm-color
@@ -7,9 +7,10 @@ ENV CGO_ENABLED=0
 ENV GOOS=linux
 ENV GOARCH=amd64
 ENV GO111MODULE=on
+ENV GOPRIVATE=go.pkg.cx
 
-ENV GOLANGCI=1.39.0
-ENV GOSWAG=1.7.0
+ENV GOLANGCI=1.43.0
+ENV GOSWAG=1.7.4
 
 RUN \
   apk add --no-cache --update bash curl git tzdata && \
@@ -21,15 +22,9 @@ RUN \
 
 RUN \
   # install golangci-lint
-  go get -u -v github.com/golangci/golangci-lint/cmd/golangci-lint@v${GOLANGCI} && \
-  cd /go/pkg/mod/github.com/golangci/golangci-lint@v${GOLANGCI} && \
-  go install -ldflags "-X 'main.version=${GOLANGCI}' -X 'main.date=$(date)'" github.com/golangci/golangci-lint/cmd/golangci-lint && \
-  cd / && \
+  go install -v -ldflags "-X 'main.version=${GOLANGCI}' -X 'main.date=$(date)'" github.com/golangci/golangci-lint/cmd/golangci-lint@v${GOLANGCI} && \
   # install goswag
-  go get -u -v github.com/swaggo/swag/cmd/swag@v${GOSWAG} && \
-  cd /go/pkg/mod/github.com/swaggo/swag@v${GOSWAG} && \
-  go install github.com/swaggo/swag/cmd/swag && \
-  cd / && \
+  go install -v github.com/swaggo/swag/cmd/swag@v${GOSWAG} && \
   # cleanup
   go clean -cache -modcache && \
   # print versions