Update the CI versions of go and alpine

.drone.yml

@@ -3,26 +3,27 @@ name: default
 
 steps:
 - name: prepare-workdir
-  image: alpine:3.11.0
+  image: alpine:3.11.3
   commands:
   - mkdir canapeapp
 
 - name: frontend
-  image: node:13.5.0
+  image: node:13.8.0
   commands:
   - npm install yarn
   - yarn install
   - yarn build
 
 - name: backend
-  image: golang:1.13.5
+  image: golang:1.14.0-alpine3.11
   commands:
+  - apk --no-cache add git
   - GO111MODULE=off go get -tags 'postgres' -u github.com/golang-migrate/migrate/cmd/migrate
   - cp $$GOPATH/bin/migrate migrate
-  - go build -v -o canapeapp/app backend/*.go
+  - CGO_ENABLED=0 go build -ldflags '-extldflags "-static"' -trimpath -v -o canapeapp/app backend/*.go
 
 - name: prepare-docker
-  image: alpine:3.11.0
+  image: alpine:3.11.3
   commands:
   - cp docker/run.sh canapeapp/run.sh
   - cp migrate canapeapp/migrate