inital

Dockerfile

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+FROM alpine
+
+ENV RTM_VERSION 9.4-4
+ENV RTM_DOWNLOAD_URL "ftp://ftp.ovh.net/made-in-ovh/rtm/install_rtm-0."
+ENV RTM_INSTALLER_CHECKSUM
+ENV RTM_REPORT_INTERVAL 60
+
+RUN apk add --no-cache bash curl sed gawk bind-tools which screen dmidecode pciutils bzip2 perl
+RUN curl https://github.com/Yelp/dumb-init/releases/download/v1.0.1/dumb-init_1.0.1_amd64 > /usr/bin/dumb-init && \
+    chmod +x /usr/bin/dumb-init
+
+COPY init.sh /usr/bin/init.sh
+
+VOLUME /cache
+
+CMD ["/usr/bin/dumb-init","/usr/bin/init.sh"]

init.sh

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+#!/bin/bash
+
+$BINARY=/usr/local/rtm/bin/rtm
+$INSTALLER="/cache/install-$RTM_VERSION.sh"
+
+function report_loop {
+ while true; do
+  $BINARY
+  sleep $RTM_REPORT_INTERVAL
+ done
+}
+
+if [ -f "$BINARY" ]; then 
+ report_loop
+else
+ curl "$RTM_DOWNLOAD_URL$RTM_VERSION" > $INSTALLER
+ CHECKSUM=$(sha256sum $INSTALLER)
+ if [ "$CHECKSUM" -eq "$RTM_INSTALLER_CHECKSUM  $INSTALLER" ]; then
+  chmod +x $INSTALLER
+  $INSTALLER
+  report_loop
+ else
+  echo Checksum mismatch!
+  exit 1
+ fi
+fi