Merge pull request drone-plugins#338 from tphoney/bump-go-1.13

(maint) bump git to 1.13 for build and test

Author: TP Honey

.drone.yml

@@ -9,7 +9,7 @@ platform:
 steps:
 - name: vet
   pull: always
-  image: golang:1.11
+  image: golang:1.13
   commands:
   - go vet ./...
   environment:
@@ -20,7 +20,7 @@ steps:
 
 - name: test
   pull: always
-  image: golang:1.11
+  image: golang:1.13
   commands:
   - go test -cover ./...
   environment:
@@ -52,7 +52,7 @@ platform:
 steps:
 - name: build-push
   pull: always
-  image: golang:1.11
+  image: golang:1.13
   commands:
   - "go build -v -ldflags \"-X main.version=${DRONE_COMMIT_SHA:0:8}\" -a -tags netgo -o release/linux/amd64/drone-docker ./cmd/drone-docker"
   environment:
@@ -65,7 +65,7 @@ steps:
 
 - name: build-tag
   pull: always
-  image: golang:1.11
+  image: golang:1.13
   commands:
   - "go build -v -ldflags \"-X main.version=${DRONE_TAG##v}\" -a -tags netgo -o release/linux/amd64/drone-docker ./cmd/drone-docker"
   environment:
@@ -77,7 +77,7 @@ steps:
 
 - name: executable
   pull: always
-  image: golang:1.11
+  image: golang:1.13
   commands:
   - ./release/linux/amd64/drone-docker --help
 

pipeline.libsonnet

@@ -5,7 +5,7 @@ local test_pipeline_name = 'testing';
 local windows(os) = os == 'windows';
 
 local golang_image(os, version) =
-  'golang:' + '1.11' + if windows(os) then '-windowsservercore-' + version else '';
+  'golang:' + '1.13' + if windows(os) then '-windowsservercore-' + version else '';
 
 {
   test(os='linux', arch='amd64', version='')::