chore: add src and pipiline

src/auto-update-repo/README.md

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+### Using this script
+
+Add `update-repo.sh` script to your `crontab`, like this:
+```shell
+  ./update-repo.sh --user someuser --password somepassword --write-crontab
+```
+
+This will add a `crontab` entry for the script to execute every five minutes. In case you're not using `crontab` or you want to change the execution frequency you can always add it manually.

src/auto-update-repo/update-repo.sh

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+#!/bin/bash
+set -o pipefail
+
+# Set path to this script
+SCRIPTPATH=$(readlink -f "$(dirname "$(readlink -f ${0})")")
+# Get stript's name
+SCRIPTNAME=$(basename ${0})
+
+check_and_update() {
+  # Get inside the git repo directory
+  cd ${SCRIPTPATH}/.. || exit
+  # Get the branch currently used
+  CURBRANCH=$(git rev-parse --abbrev-ref HEAD)
+  # Get latest updates to the repo
+  git fetch --all && \
+  git reset --hard origin/${CURBRANCH}
+
+  # Get latest release of webhook and release used in this repo
+  LATEST_RELEASE=$(curl -s https://api.github.com/repos/adnanh/webhook/releases/latest | grep tag_name | awk -F ': "' '{ print $2 }' | awk -F '",' '{ print $1 }')
+  LOCAL_RELEASE=$(grep "^ENV.*WEBHOOK_VERSION" ${SCRIPTPATH}/../Dockerfile | awk '{ print $NF }')
+
+  # Compare releases and update Dockerfile in case they differ
+  if [[ "${LOCAL_RELEASE}" != "${LATEST_RELEASE}" ]] && [[ -n ${LATEST_RELEASE} ]]; then
+    sed -i "s/WEBHOOK_VERSION ${LOCAL_RELEASE}/WEBHOOK_VERSION ${LATEST_RELEASE}/g" ${SCRIPTPATH}/../Dockerfile
+    git commit -am "- bump webhook version to ${LATEST_RELEASE}"
+    git push origin ${CURBRANCH} && \
+    curl -s -X POST -H "Content-Type: application/json" \
+      -d '{"tag_name":"'${LATEST_RELEASE}'","target_commitish":"'${CURBRANCH}'","name":"webhook '${LATEST_RELEASE}'","body":"Release for webhook version '${LATEST_RELEASE}'.","draft":false,"prerelease":false}' \
+      https://${GITHUB_USER}:${GITHUB_PASS}@api.github.com/repos/${GITHUB_USER}/docker-webhook/releases
+  fi
+}
+
+argmissing() {
+  echo "Usage: $0 --user GITHUB_USERNAME --password GITHUB_PASSWORD [--write-crontab]"
+  echo
+  echo "Switches:"
+  echo -e "\t--user\t\t\tSpecify GitHub username - required."
+  echo -e "\t--password\t\tSpecify GitHub password - required."
+  echo -e "\t--write-crontab\t\tAdd crontab entry for this script - optional."
+  echo
+  echo "Examples:"
+  echo -e "\t$0 --user someuser --password somepassword"
+  echo -e "\t$0 --user someuser --password somepassword --write-crontab"
+  exit 1
+}
+
+# Translate script arguments to variables
+GITHUB_USER=$(echo "$@" | awk -F "--user " '{ print $2 }' | awk '{ print $1 }')
+GITHUB_PASS=$(echo "$@" | awk -F "--password " '{ print $2 }' | awk '{ print $1 }')
+
+if [[ -z ${GITHUB_USER} ]] || [[ -z ${GITHUB_PASS} ]]; then
+  argmissing
+else
+  if [[ -n $(echo "$@" | grep "\-\-write-crontab") ]]; then
+    if [[ -z $(crontab -l | grep ${SCRIPTNAME}) ]]; then
+      echo "Crontab entry is being created."
+      crontab -l | { cat; echo -e "# Check for webhook releases every five minutes\n*/5 * * * * ${SCRIPTPATH}/${SCRIPTNAME} --user ${GITHUB_USER} --password ${GITHUB_PASS} > /dev/null"; } | crontab -
+    else
+      echo "Crontab entry already exists."
+    fi
+  fi
+  check_and_update
+fi
+
+exit 0