message: remove which image detector and redundant busybox tools.
diff: @@ -3,10 +3,7 @@ FROM alpine
  MAINTAINER amazee.io
  ENV BACKUPS_DIR="/mnt/backups"
  -RUN touch /amazeeio
  -
  -RUN apk add --update --no-cache bash ca-certificates curl gzip tar unzip wget && rm -rf /var/cache/apk/*
  -RUN apk add --update --no-cache mariadb-client mariadb mariadb-common pwgen && rm -rf /var/cache/apk/*
  +RUN apk add --no-cache mariadb-client mariadb mariadb-common pwgen && rm -rf /var/cache/apk/*
  RUN set -xe; \
  mkdir -p /var/run/mysqld /var/lib/mysql /etc/mysql /etc/mysql/conf.d /etc/mysql/ "${BACKUPS_DIR}"; \
  