FROM golang:1.15-alpine3.12 AS builder

ENV GOFLAGS="-mod=readonly"

RUN apk add --update --no-cache bash ca-certificates curl git gcc g++

RUN mkdir -p /workspace
WORKDIR /workspace

ARG GOPROXY

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

ARG COMMIT_SHA

# This ARG allows to disable some optional features and it might be useful if you build the image yourself.
# For example you can disable S3 and GCS support like this:
# --build-arg FEATURES=nos3,nogcs
ARG FEATURES

COPY . .

RUN set -xe && \
    export COMMIT_SHA=${COMMIT_SHA:-$(git describe --always --dirty)} && \
    go build $(if [ -n "${FEATURES}" ]; then echo "-tags ${FEATURES}"; fi) -ldflags "-s -w -X github.com/drakkan/sftpgo/version.commit=${COMMIT_SHA} -X github.com/drakkan/sftpgo/version.date=`date -u +%FT%TZ`" -v -o sftpgo


FROM alpine:3.12

# Set to "true" to install the optional git and rsync dependencies
ARG INSTALL_OPTIONAL_PACKAGES=false

RUN apk add --update --no-cache ca-certificates tzdata mailcap

RUN if [ "${INSTALL_OPTIONAL_PACKAGES}" = "true" ]; then apk add --update --no-cache rsync git; fi

# set up nsswitch.conf for Go's "netgo" implementation
# https://github.com/gliderlabs/docker-alpine/issues/367#issuecomment-424546457
RUN test ! -e /etc/nsswitch.conf && echo 'hosts: files dns' > /etc/nsswitch.conf

RUN mkdir -p /etc/sftpgo /var/lib/sftpgo /usr/share/sftpgo /srv/sftpgo/data /srv/sftpgo/backups

RUN addgroup -g 1000 -S sftpgo && \
    adduser -u 1000 -h /var/lib/sftpgo -s /sbin/nologin -G sftpgo -S -D -H -g "SFTPGo user" sftpgo

COPY --from=builder /workspace/sftpgo.json /etc/sftpgo/sftpgo.json
COPY --from=builder /workspace/templates /usr/share/sftpgo/templates
COPY --from=builder /workspace/static /usr/share/sftpgo/static
COPY --from=builder /workspace/sftpgo /usr/local/bin/

# Log to the stdout so the logs will be available using docker logs
ENV SFTPGO_LOG_FILE_PATH=""
# templates and static paths are inside the container
ENV SFTPGO_HTTPD__TEMPLATES_PATH=/usr/share/sftpgo/templates
ENV SFTPGO_HTTPD__STATIC_FILES_PATH=/usr/share/sftpgo/static

# Modify the default configuration file
RUN sed -i "s|\"users_base_dir\": \"\",|\"users_base_dir\": \"/srv/sftpgo/data\",|" /etc/sftpgo/sftpgo.json && \
    sed -i "s|\"backups\"|\"/srv/sftpgo/backups\"|" /etc/sftpgo/sftpgo.json && \
    sed -i "s|\"address\": \"127.0.0.1\",|\"address\": \"\",|" /etc/sftpgo/sftpgo.json

RUN chown -R sftpgo:sftpgo /etc/sftpgo /srv/sftpgo && chown sftpgo:sftpgo /var/lib/sftpgo && chmod 700 /srv/sftpgo/backups

WORKDIR /var/lib/sftpgo
USER 1000:1000

CMD ["sftpgo", "serve"]