Dockerfile.alpine

FROM golang:1.18-alpine as builder

# https://github.com/chemidy/smallest-secured-golang-docker-image/blob/master/Dockerfile
RUN apk update && apk add --no-cache git ca-certificates tzdata && update-ca-certificates

# Create appuser
ENV USER=appuser
ENV UID=10001
ARG GITHUB_USER
ARG GITHUB_TOKEN

# See https://stackoverflow.com/a/55757473/12429735
RUN adduser \
    --disabled-password \
    --gecos "" \
    --home "/app" \
    --shell "/sbin/nologin" \
#    --no-create-home \
    --uid "${UID}" \
    "${USER}"

RUN mkdir -p /go/src/build

WORKDIR /go/src/build

COPY goApp/go.mod .
COPY goApp/go.sum .
RUN go mod download

ADD goApp /go/src/build/

RUN CGO_ENABLED=0 go build -o main server.go

FROM alpine:3.15

# RUN apk add --no-cache mysql-client
RUN apk update && apk add --no-cache postgresql14-client

# Import from builder.
COPY --from=builder /usr/share/zoneinfo /usr/share/zoneinfo
COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
COPY --from=builder /etc/passwd /etc/passwd
COPY --from=builder /etc/group /etc/group

COPY --from=builder go/src/build/main /app/
WORKDIR /app
# Use an unprivileged user.
# USER appuser:appuser
EXPOSE 8099
CMD ["./main"]