Created
August 18, 2017 06:45
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#!/bin/bash | |
# Adapted from... | |
# https://stackoverflow.com/questions/26423515/how-to-automatically-update-your-docker-containers-if-base-images-are-updated | |
DATAPATH='./data/docker/updater/data' | |
UNAME="<DOCKER_HUB_USERNAME>" | |
UPASS="<DOCKER_HUB_PASSWORD>" | |
# aquire token | |
TOKEN=$(curl -s -H "Content-Type: application/json" -X POST -d '{"username": "'${UNAME}'", "password": "'${UPASS}'"}' https://hub.docker.com/v2/users/login/ | jq -r .token) | |
if [ ! -d "${DATAPATH}" ]; then | |
mkdir -p "${DATAPATH}"; | |
fi | |
IMAGE="tmaslen/tweetgest" | |
ORIGIMAGE=${IMAGE} | |
if [[ "$IMAGE" != *\/* ]]; then | |
IMAGE=library/${IMAGE} | |
fi | |
IMAGE=${IMAGE%%:*} | |
echo "Checking ${IMAGE}" | |
PARSED=${IMAGE//\//.} | |
if [ ! -f "${DATAPATH}/${PARSED}" ]; then | |
# File doesn't exist yet, make baseline | |
echo "Setting baseline for ${IMAGE}" | |
curl -s -H "Authorization: JWT ${TOKEN}" "https://registry.hub.docker.com/v2/repositories/${IMAGE}/tags/" > "${DATAPATH}/${PARSED}" | |
else | |
# File does exist, do a compare | |
NEW=$(curl -s -H "Authorization: JWT ${TOKEN}" "https://registry.hub.docker.com/v2/repositories/${IMAGE}/tags/") | |
OLD=$(cat "${DATAPATH}/${PARSED}") | |
if [[ "${OLD}" == "${NEW}" ]]; then | |
echo "Image ${IMAGE} is up to date"; | |
else | |
echo ${NEW} > "${DATAPATH}/${PARSED}" | |
echo "Image ${IMAGE} needs to be updated"; | |
docker pull ${IMAGE}:latest | |
#H=`hostname` | |
#echo " \"MAIL FROM: root@${H}\"; echo \"RCPT TO: <USER>@<EMAILHOST>.com\"; echo \"DATA\"; echo \"Subject: ${H} - ${IMAGE} needs update\"; echo \"\"; echo -e \"\n${IMAGE} needs update.\n\ndocker pull ${ORIGIMAGE}\" " | |
# ssh -i /data/keys/<KEYFILE> <USER>@<REMOTEHOST>.com "{ echo \"MAIL FROM: root@${H}\"; echo \"RCPT TO: <USER>@<EMAILHOST>.com\"; echo \"DATA\"; echo \"Subject: ${H} - ${IMAGE} needs update\"; echo \"\"; echo -e \"\n${IMAGE} needs update.\n\ndocker pull ${ORIGIMAGE}\"; echo \"\"; echo \".\"; echo \"quit\"; sleep 1; } | telnet <SMTPHOST> 25" | |
fi | |
fi |
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