FROM alpine:latest

# Steps done in one RUN layer:
# - Install packages
# - Fix default group (1000 does not exist)
# - OpenSSH needs /var/run/sshd to run
# - Remove generic host keys, entrypoint generates unique keys
RUN apk add --no-cache openssh openssh-sftp-server && \
    sed -i 's/GROUP=1000/GROUP=100/' /etc/default/useradd && \
    mkdir -p /var/run/sshd && \
    rm -f /etc/ssh/ssh_host_*key*

COPY root/ /

ENTRYPOINT ["/entrypoint.sh"]