update docker container to use alpine linux + supercronic

Dockerfile

@@ -1,5 +1,5 @@
 # Use the official Python image from the Docker Hub
-FROM python:3.12
+FROM python:3.12-alpine
 
 # Set the working directory in the container
 WORKDIR /app
@@ -10,24 +10,21 @@ COPY requirements.txt /app/
 # Install the package dependencies
 RUN pip install --no-cache-dir -r requirements.txt
 
-# Install cron
-RUN apt-get update && apt-get install -y cron
+# Install supercronic
+RUN apk add curl
+# Latest releases available at https://github.com/aptible/supercronic/releases
+ENV SUPERCRONIC_URL=https://github.com/aptible/supercronic/releases/download/v0.2.33/supercronic-linux-amd64 \
+    SUPERCRONIC_SHA1SUM=71b0d58cc53f6bd72cf2f293e09e294b79c666d8 \
+    SUPERCRONIC=supercronic-linux-amd64
+RUN curl -fsSLO "$SUPERCRONIC_URL" \
+ && echo "${SUPERCRONIC_SHA1SUM}  ${SUPERCRONIC}" | sha1sum -c - \
+ && chmod +x "$SUPERCRONIC" \
+ && mv "$SUPERCRONIC" "/usr/local/bin/${SUPERCRONIC}" \
+ && ln -s "/usr/local/bin/${SUPERCRONIC}" /usr/local/bin/supercronic
 
 # Copy the rest of the application code into the container
 COPY . /app/
 
-# Copy the cron job file into the container
-COPY cron-jobs /etc/cron.d/cron-jobs
-
-# Give execution rights on the cron job
-RUN chmod 0644 /etc/cron.d/cron-jobs
-
-# Apply cron job
-RUN crontab /etc/cron.d/cron-jobs
-
-# Create a cron log file to be able to run `tail`
-RUN touch /var/log/cron.log
-
 # Don't buffer log output to stdout
 ENV PYTHONUNBUFFERED 1
 

entrypoint.sh

@@ -7,8 +7,8 @@ python manage.py makemigrations matcher
 python manage.py migrate
 python manage.py createsuperuser --no-input
 
-# Start the cron service
-service cron start
+# Start supercronic
+supercronic /app/cron-jobs
 
 # Start Gunicorn server
 exec gunicorn meetups.wsgi:application --bind 0.0.0.0:$PORT