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Dockerfile
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Dockerfile
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# syntax=docker/dockerfile:1
FROM golang:1.18-alpine AS builder
WORKDIR /go/src/app
ENV GO111MODULE=on \
CGO_ENABLED=1 \
GOOS=linux \
GOARCH=amd64
COPY go.mod ./
COPY go.sum ./
RUN go mod download
COPY . .
WORKDIR /go/src/app/cmd
RUN go build -o /main
FROM alpine
COPY --from=builder /main .
COPY --from=builder /go/src/app/templates .
ARG USER=skyuser
ENV HOME /home/$USER
# install sudo as root
RUN apk add --update sudo
RUN adduser -D $USER \
&& echo "$USER ALL=(ALL) NOPASSWD: ALL" > /etc/sudoers.d/$USER \
&& chmod 0440 /etc/sudoers.d/$USER
USER $USER
WORKDIR $HOME
USER skyuser
EXPOSE 8080
CMD ["/main"]