chore(docker): build with golang 1.17, alpine 3.15

.github/workflows/pr.yaml

@@ -9,7 +9,7 @@ jobs:
     - name: Setup Go
       uses: actions/setup-go@v1
       with:
-        go-version: 1.13
+        go-version: 1.17
     - name: Run unit tests
       run: |
         go test -mod vendor ./... -cover

.github/workflows/release.yml

@@ -12,7 +12,7 @@ jobs:
     - name: Setup Go
       uses: actions/setup-go@v1
       with:
-        go-version: 1.13
+        go-version: 1.17
     - name: Run unit tests
       run: |
         go test -mod vendor ./... -cover

Dockerfile

@@ -1,21 +1,21 @@
-FROM golang:1.17.3-alpine3.14 as builder
+FROM golang:1.17-alpine3.15 as builder
 
 WORKDIR /go/src/github.com/rajatjindal/krew-release-bot
 COPY . .
 
+RUN apk add --no-cache git
+
 RUN CGO_ENABLED=0 GOOS=linux go test -mod vendor ./... -cover
 RUN CGO_ENABLED=0 GOOS=linux go build -mod vendor --ldflags "-s -w" -o krew-release-bot cmd/action/*
 
-FROM alpine:3.14.3
+FROM alpine:3.15
 
-RUN mkdir -p /home/app
+WORKDIR /home/app
 
 # Add non root user
 RUN addgroup -S app && adduser app -S -G app
 RUN chown app /home/app
 
-WORKDIR /home/app
-
 USER app
 
 COPY --from=builder /go/src/github.com/rajatjindal/krew-release-bot/krew-release-bot /usr/local/bin/