explicitly target linux amd64

.drone.yml

@@ -2,6 +2,9 @@ kind: pipeline
 type: docker
 name: default
 
+platform:
+  os: linux
+  arch: amd64
 
 steps:
   - name: test
@@ -16,7 +19,7 @@ steps:
   - name: build
     image: golang:1.13
     commands:
-      - go build -o build/drone-helm cmd/drone-helm/main.go
+      - GOOS=linux GOARCH=amd64 go build -o build/drone-helm cmd/drone-helm/main.go
   - name: publish_linux_amd64
     image: plugins/docker
     settings:

Dockerfile

@@ -1,8 +1,6 @@
 FROM alpine/helm:3.8.1
 MAINTAINER Joachim Hill-Grannec <joachim@pelo.tech>
 
-RUN apk add libc6-compat
-
 COPY build/drone-helm /bin/drone-helm
 COPY assets/kubeconfig.tpl /root/.kube/config.tpl
 

Dockerfile.multistage

@@ -1,33 +0,0 @@
-# syntax=docker/dockerfile:1
-## Build
-FROM golang:1.13 AS build
-
-WORKDIR /app
-
-COPY go.mod ./
-COPY go.sum ./
-
-COPY cmd cmd
-COPY internal internal
-COPY assets assets
-
-# test
-RUN go test ./cmd/... ./internal/...
-RUN go vet ./cmd/... ./internal/...
-
-# Build binary
-RUN go build -o build/drone-helm cmd/drone-helm/main.go
-
-## Deploy
-FROM alpine/helm:3.8.1
-
-RUN apk add libc6-compat
-
-# COPY build/drone-helm /bin/drone-helm
-COPY --from=build /app/build/drone-helm /bin/drone-helm
-COPY assets/kubeconfig.tpl /root/.kube/config.tpl
-
-LABEL description="Helm 3 plugin for Drone 3"
-LABEL base="alpine/helm"
-
-ENTRYPOINT [ "/bin/drone-helm" ]