Docker configuration

.gitignore

@@ -8,4 +8,9 @@ regctl
 # ignore snooze file
 snooze.list
 # ignore updates file
-updates_available.txt
+updates_available.txt
+# ignore user compose files
+compose.yaml
+compose.yml
+docker-compose.yaml
+docker-compose.yml

Dockerfile

@@ -0,0 +1,25 @@
+# Use an official Alpine image as a base
+FROM alpine:latest
+
+WORKDIR /app
+
+# Install apps
+RUN apk update && apk add --no-cache bash curl docker-cli docker-cli-compose supercronic jq regclient msmtp --repository=http://dl-cdn.alpinelinux.org/alpine/edge/testing/
+
+# Copy the script files into the container
+COPY entrypoint.sh /usr/local/bin/entrypoint.sh
+COPY dockcheck.sh /app/dockcheck.sh
+COPY urls.list /app/urls.list
+COPY notify_templates /app/notify_templates
+COPY extras /app/extras
+COPY addons /app/addons
+
+# Create symlink, give execution rights on the script and set proper permissions
+RUN ln -s /app/dockcheck.sh /usr/local/bin/dockcheck.sh
+RUN chmod +x /usr/local/bin/dockcheck.sh
+RUN chmod +x /usr/local/bin/entrypoint.sh
+
+ENTRYPOINT ["/usr/local/bin/entrypoint.sh"]
+
+# Run the cron daemon in the foreground and tail the log file to keep the container running
+CMD ["supercronic", "/app/crontab"]

compose-example.yaml

@@ -0,0 +1,14 @@
+services:
+  dockcheck:
+    image: dockcheck:latest
+    restart: unless-stopped
+    environment:
+      CRON_SCHEDULE: "0 * * * *"
+      DOCKCHECK_ARGS: "-mniI -x 10"
+      CRON_SCHEDULE_1: "30 1 * * *"
+      DOCKCHECK_ARGS_1: "-milap -x 1"
+    volumes:
+      - /etc/localtime:/etc/localtime:ro
+      - /var/run/docker.sock:/var/run/docker.sock
+      - ./dockcheck.config:/app/dockcheck.config
+      - /path/to/projects/docker:/path/to/projects/docker:ro

entrypoint.sh

@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+
+# Exit immediately if a command exits with a non-zero status
+set -e
+
+# If the CRON_SCHEDULE and DOCKCHECK_ARGS environment variables are set, create the crontab entry for the dockcheck user
+if [ -n "$CRON_SCHEDULE" ] && [ -n "$DOCKCHECK_ARGS" ]; then
+  # Write the environment variable content to a temporary file, ensuring a newline at the end
+  echo "$CRON_SCHEDULE" /app/dockcheck.sh "$DOCKCHECK_ARGS" > /app/crontab
+
+  # Support additional schedule variables
+  for schedule_var in "${!CRON_SCHEDULE_@}"; do
+    suffix="${schedule_var#CRON_SCHEDULE_}"
+    schedule_value="${!schedule_var}"
+    args_var="DOCKCHECK_ARGS_${suffix}"
+    args_value="${!args_var}"
+    echo "$schedule_value" /app/dockcheck.sh "$args_value" >> /app/crontab
+  done
+
+  echo "Crontab created."
+else
+  echo "No CRON_SCHEDULE or DOCKCHECK_ARGS environment variable(s) found. No crontab created."
+fi
+
+# Pass control to the CMD command specified in the Dockerfile
+exec "$@"