golang 1.15

Signed-off-by: Emily Casey <ecasey@vmware.com>

.github/workflows/build.yml

@@ -20,7 +20,7 @@ jobs:
       - name: Set up go
         uses: actions/setup-go@v2-beta
         with:
-          go-version: '1.14'
+          go-version: '1.15'
       - name: Set up go env
         run: |
           echo "::set-env name=GOPATH::$(go env GOPATH)"
@@ -57,7 +57,7 @@ jobs:
       - name: Set up go
         uses: actions/setup-go@v2-beta
         with:
-          go-version: '1.14'
+          go-version: '1.15'
       - name: Install jq
         run: choco install jq
       - name: Test
@@ -84,7 +84,7 @@ jobs:
       - name: Set up go
         uses: actions/setup-go@v2-beta
         with:
-          go-version: '1.14'
+          go-version: '1.15'
       - name: Set up go env
         run: |
           echo "::set-env name=GOPATH::$(go env GOPATH)"

Makefile

@@ -30,8 +30,8 @@ LDFLAGS+=-X 'github.com/buildpacks/lifecycle/cmd.Version=$(LIFECYCLE_VERSION)'
 GOBUILD:=go build $(GOFLAGS) -ldflags "$(LDFLAGS)"
 GOTEST=$(GOCMD) test $(GOFLAGS)
 BUILD_DIR?=$(PWD)$/out
-LINUX_COMPILATION_IMAGE?=golang:1.14-alpine
-WINDOWS_COMPILATION_IMAGE?=golang:1.14-windowsservercore-1809
+LINUX_COMPILATION_IMAGE?=golang:1.15-alpine
+WINDOWS_COMPILATION_IMAGE?=golang:1.15-windowsservercore-1809
 SOURCE_COMPILATION_IMAGE?=lifecycle-img
 BUILD_CTR?=lifecycle-ctr
 DOCKER_CMD?=make test

go.mod

@@ -19,4 +19,4 @@ require (
 	gotest.tools/v3 v3.0.2 // indirect
 )
 
-go 1.14
+go 1.15

tools/go.mod

@@ -1,6 +1,6 @@
 module github.com/buildpacks/lifecycle/tools
 
-go 1.14
+go 1.15
 
 require (
 	github.com/BurntSushi/toml v0.3.1