Update goproxy to default proxy.golang.org

.goreleaser.yml

@@ -1,6 +1,6 @@
 env:
   - GO111MODULE=on
-  - GOPROXY="https://gocenter.io"
+  - GOPROXY="https://proxy.golang.org,direct"
 
 archives:
   - id: default

.travis.yml

@@ -9,6 +9,6 @@ before_install:
   - test ! -d $GOPATH/src/github.com/wtfutil/wtf && mv $TRAVIS_BUILD_DIR $GOPATH/src/github.com/wtfutil/wtf || true
   - export TRAVIS_BUILD_DIR=$HOME/gopath/src/github.com/wtfutil/wtf
   - cd $HOME/gopath/src/github.com/wtfutil/wtf
-  - export GOPROXY="https://gocenter.io" && export GO111MODULE=on
+  - export GOPROXY="https://proxy.golang.org,direct" && export GO111MODULE=on
 
 script: go get ./... && ./scripts/check-uncommitted-vendor-files.sh && go test -v github.com/wtfutil/wtf/...

Dockerfile

@@ -4,7 +4,7 @@ RUN apk add --no-cache make ncurses
 
 COPY . $GOPATH/src/github.com/wtfutil/wtf
 
-ENV GOPROXY=https://gocenter.io
+ENV GOPROXY=https://proxy.golang.org,direct
 ENV GO111MODULE=on
 ENV GOSUMDB=off
 

Makefile

@@ -18,7 +18,7 @@ endif
 
 # Set go modules to on and use GoCenter for immutable modules
 export GO111MODULE = on
-export GOPROXY = https://gocenter.io
+export GOPROXY = https://proxy.golang.org,direct
 
 # Determines the path to this Makefile
 THIS_FILE := $(lastword $(MAKEFILE_LIST))

README.md

@@ -93,8 +93,8 @@ and you should be good to go.
 If you want to run the build command from within your `$GOPATH`:
 
 ```bash
-# Set the Go proxy variable to GoCenter
-export GOPROXY="https://gocenter.io"
+# Set the Go proxy
+export GOPROXY="https://proxy.golang.org,direct"
 
 # Disable the Go checksum database
 export GOSUMDB=off
@@ -111,8 +111,8 @@ make run
 If you want to run the build command from a folder that is not in your `$GOPATH`:
 
 ```bash
-# Set the Go proxy variable to GoCenter
-export GOPROXY="https://gocenter.io"
+# Set the Go proxy
+export GOPROXY="https://proxy.golang.org,direct"
 
 go get -u github.com/wtfutil/wtf
 cd $GOPATH/src/github.com/wtfutil/wtf

scripts/check-uncommitted-vendor-files.sh

@@ -2,7 +2,7 @@
 
 set -euo pipefail
 
-GOPROXY="https://gocenter.io" GOSUMDB=off GO111MODULE=on go mod tidy
+GOPROXY="https://proxy.golang.org,direct" GOSUMDB=off GO111MODULE=on go mod tidy
 
 untracked_files=$(git ls-files --others --exclude-standard | wc -l)