FROM alpine
MAINTAINER David Personette <dperson@gmail.com>

# Install samba
RUN apk --no-cache add bash samba shadow && \
    adduser -D -G users -H -g 'Samba User' -h /tmp smbuser && \
    sed -i 's|^\(   log file = \).*|\1/dev/stdout|' /etc/samba/smb.conf && \
    sed -i 's|^\(   load printers = \).*|\1no|' /etc/samba/smb.conf && \
    sed -i 's|^\(   printcap name = \).*|\1/dev/null|' /etc/samba/smb.conf && \
    sed -i 's|^;*\(   printing = \).*|\1bsd|' /etc/samba/smb.conf && \
    sed -i 's|^\(   unix password sync = \).*|\1no|' /etc/samba/smb.conf && \
    sed -i '/Share Definitions/,$d' /etc/samba/smb.conf && \
    echo '   pam password change = yes' >>/etc/samba/smb.conf && \
    echo '   map to guest = bad user' >>/etc/samba/smb.conf && \
    echo '   usershare allow guests = yes' >>/etc/samba/smb.conf && \
    echo '   create mask = 0664' >>/etc/samba/smb.conf && \
    echo '   force create mode = 0664' >>/etc/samba/smb.conf && \
    echo '   directory mask = 0775' >>/etc/samba/smb.conf && \
    echo '   force directory mode = 0775' >>/etc/samba/smb.conf && \
    echo '   force user = smbuser' >>/etc/samba/smb.conf && \
    echo '   force group = users' >>/etc/samba/smb.conf && \
    echo '   follow symlinks = yes' >>/etc/samba/smb.conf && \
    echo '   load printers = no' >>/etc/samba/smb.conf && \
    echo '   printing = bsd' >>/etc/samba/smb.conf && \
    echo '   printcap name = /dev/null' >>/etc/samba/smb.conf && \
    echo '   disable spoolss = yes' >>/etc/samba/smb.conf && \
    echo '   socket options = TCP_NODELAY' >>/etc/samba/smb.conf && \
    echo '   strict locking = no' >>/etc/samba/smb.conf && \
    echo '   vfs objects = recycle' >>/etc/samba/smb.conf && \
    echo '   recycle:keeptree = yes' >>/etc/samba/smb.conf && \
    echo '   recycle:versions = yes' >>/etc/samba/smb.conf && \
    echo '   min protocol = SMB2' >>/etc/samba/smb.conf && \
    echo '' >>/etc/samba/smb.conf && \
    rm -rf /tmp/*

COPY samba.sh /usr/bin/

HEALTHCHECK --interval=60s --timeout=15s \
             CMD smbclient -L '\\localhost\' -U 'guest%' -m SMB3

EXPOSE 137/udp 138/udp 139 445

VOLUME ["/etc/samba"]

ENTRYPOINT ["samba.sh"]