Dockerfile templates §

Docker multi-stage builds §

• go-clean-template

  # Step 1: Modules caching
  FROM golang:1.16.2-alpine3.13 as modules
  COPY go.mod go.sum /modules/
  WORKDIR /modules
  RUN go mod download
   
  # Step 2: Builder
  FROM golang:1.16.2-alpine3.13 as builder
  COPY --from=modules /go/pkg /go/pkg
  COPY . /app
  WORKDIR /app
  RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 \
      go build -tags migrate -o /bin/app ./cmd/app
   
  # Step 3: Final
  FROM scratch
  COPY --from=builder /app/config /config
  COPY --from=builder /app/migrations /migrations
  COPY --from=builder /bin/app /app
  COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
  CMD ["/app"]