Upgrade to go v1.13.1 (#880)

.circleci/config.yml

@@ -4,7 +4,7 @@ jobs:
 
   build:
     docker:
-      - image: circleci/golang:1.12.4
+      - image: circleci/golang:1.13.1
     environment:
       GOPATH: /go
     working_directory: /home/circleci/workspace/helmfile
@@ -29,7 +29,7 @@ jobs:
     environment:
       GOPATH: /go
     docker:
-      - image: circleci/golang:1.12.4
+      - image: circleci/golang:1.13.1
     working_directory: /home/circleci/workspace/helmfile
     steps:
       - checkout
@@ -91,7 +91,7 @@ jobs:
 
   release:
     docker:
-      - image: circleci/golang:1.12.4
+      - image: circleci/golang:1.13.1
     working_directory: /home/circleci/workspace/helmfile
     steps:
     - checkout

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.12.4-alpine3.9 as builder
+FROM golang:1.13.1-alpine3.10 as builder
 
 RUN apk add --no-cache make git
 WORKDIR /workspace/helmfile
@@ -7,7 +7,7 @@ RUN make static-linux
 
 # -----------------------------------------------------------------------------
 
-FROM alpine:3.8
+FROM alpine:3.10
 
 RUN apk add --no-cache ca-certificates git bash curl jq
 

go.mod

@@ -1,6 +1,6 @@
 module github.com/roboll/helmfile
 
-go 1.12
+go 1.13
 
 require (
 	github.com/Masterminds/goutils v1.1.0 // indirect