message: correct commons import, choose real backup location.
diff: +ARG IMAGE_REPO
  +FROM ${IMAGE_REPO:-lagoon}/commons as commons
  FROM alpine
  MAINTAINER amazee.io
  -ENV BACKUPS_DIR="/mnt/backups"
  +
  +# Copying commons files
  +COPY --from=commons /lagoon /lagoon
  +COPY --from=commons /bin/fix-permissions /bin/ep /bin/docker-sleep /bin/
  +COPY --from=commons /home /home
  +
  +# When Bash is invoked via `sh` it behaves like the old Bourne Shell and sources a file that is given in `ENV`
  +# When Bash is invoked as non-interactive (like `bash -c command`) it sources a file that is given in `BASH_ENV`
  +ENV TMPDIR=/tmp TMP=/tmp HOME=/home ENV=/home/.bashrc BASH_ENV=/home/.bashrc
  +
  +MAINTAINER amazee.io
  +ENV BACKUPS_DIR="/var/lib/mysql/backup"
  RUN apk add --no-cache mariadb-client mariadb mariadb-common pwgen && rm -rf /var/cache/apk/*
  