Initial commit - forked from the corresponding Smartfront repositories.

.templates/bin/watchtower_redeploy

@@ -0,0 +1,81 @@
+#!/bin/bash
+#
+# https://containrrr.dev/watchtower/
+# https://hub.docker.com/r/containrrr/watchtower
+# https://github.com/containrrr/watchtower
+#
+# Email notification settings below assume the gateway acting
+# as a smarthost and Docker version v20.10+ is required.
+
+image="containrrr/watchtower:latest"
+instance="watchtower"
+networks=""
+outfile=""
+volume=""
+
+MSG_MISSINGDEP="Fatal: missing dependency"
+
+# Checks the dependencies.
+TR=$(which tr 2>/dev/null)
+if [ -z "$TR" ]; then echo "$MSG_MISSINGDEP tr."; exit 1 ; fi
+for item in cat dirname docker hostname
+do
+    if [ -n "$(which $item)" ]
+    then export $(echo $item | "$TR" '[:lower:]' '[:upper:]')=$(which $item)
+    else echo "$MSG_MISSINGDEP $item." >&2; exit 1; fi
+done
+
+# Stops and removes the container (if necessary).
+if [ -n "$("$DOCKER" ps -q -f name=$instance)" ]
+then "$DOCKER" stop "$instance"; fi
+if [ -n "$("$DOCKER" ps -a -q -f name=$instance)" ]
+then "$DOCKER" rm "$instance"; fi
+
+# Checks for an upgrade.
+$DOCKER pull "$image"
+
+# Creates the container.
+$DOCKER create \
+    -e TZ=$("$CAT" "/etc/timezone") \
+    -e WATCHTOWER_CLEANUP=true \
+    -e WATCHTOWER_DEBUG=false \
+    -e WATCHTOWER_INCLUDE_STOPPED=true \
+    -e WATCHTOWER_LABEL_ENABLE=true \
+    -e WATCHTOWER_MONITOR_ONLY=true \
+    -e WATCHTOWER_REVIVE_STOPPED=false \
+    -e WATCHTOWER_NO_PULL=false \
+    -e WATCHTOWER_SCHEDULE="0 0 1 * * *" \
+    -e WATCHTOWER_WARN_ON_HEAD_FAILURE="never" \
+    -e WATCHTOWER_NOTIFICATIONS=email \
+    -e WATCHTOWER_NOTIFICATION_EMAIL_FROM="$USER@$(hostname -f)" \
+    -e WATCHTOWER_NOTIFICATION_EMAIL_TO="$USER@$(hostname)"  \
+    -e WATCHTOWER_NOTIFICATION_EMAIL_SERVER="host.docker.internal" \
+    -e WATCHTOWER_NOTIFICATION_EMAIL_SERVER_PORT=25 \
+    -e WATCHTOWER_NOTIFICATION_EMAIL_SERVER_TLS_SKIP_VERIFY=true \
+    -e WATCHTOWER_NOTIFICATION_EMAIL_DELAY=15 \
+    -e WATCHTOWER_NOTIFICATION_EMAIL_SUBJECTTAG="[Watchtower $("$HOSTNAME")]" \
+    -v /var/run/docker.sock:/var/run/docker.sock \
+    --add-host="host.docker.internal:host-gateway" \
+    --restart unless-stopped \
+    --label "com.centurylinklabs.watchtower.enable=true" \
+    --name $instance $image
+
+# Connects it to the network(s).
+if [ -n "$networks" ]; then
+    for network in $networks
+    do
+        # Checks the network, creates it if necessary.
+        if [ -z "$("$DOCKER" network ls -q -f name=$network)" ]
+        then "$DOCKER" network create -d bridge "$network"; fi
+        # Then connects.
+        $DOCKER network connect $network $instance
+    done
+fi
+
+# Finally launches it.
+$DOCKER start $instance
+if [ -n "$outfile" -a -w "$("$DIRNAME" "$outfile")" ]; then
+    # Sets a background process to collect the image's output.
+    # This process will automatically terminate when the image stops.
+    "$DOCKER" logs -f $instance >>"$outfile" 2>&1 &
+fi