implement docker remote and local cron job

Dockerfile

@@ -1,6 +1,10 @@
 # Use Ubuntu 20.04 as the base image
 FROM ubuntu:20.04
 
+# Set environment variables to avoid interactive prompts
+ENV DEBIAN_FRONTEND=noninteractive
+ENV TZ=America/Chicago
+
 # Install dependencies
 RUN apt-get update && apt-get install -y \
     sqlite3 \
@@ -10,11 +14,12 @@ RUN apt-get update && apt-get install -y \
     gzip \
     && rm -rf /var/lib/apt/lists/*
 
+ARG CACHE_BUST=1
+
 # Create necessary directories
 RUN mkdir -p /jobs/data/sqlite
 RUN mkdir -p /var/tmp
 
-# Copy the backup script into the container
 COPY backup_sqlite.sh /usr/local/bin/backup_script.sh
 
 # Make the script executable
@@ -23,7 +28,6 @@ RUN chmod +x /usr/local/bin/backup_script.sh
 # Create the cron log file
 RUN touch /var/log/cron.log
 
-# Copy the cron job file into the cron.d directory
 COPY backup_cron /etc/cron.d/backup_cron
 
 # Set permissions for the cron job file
@@ -35,5 +39,11 @@ RUN crontab /etc/cron.d/backup_cron
 # Expose the cron log file as a volume
 VOLUME /var/log
 
-# Start cron in the foreground when the container starts
+# Copy the entrypoint script
-CMD ["cron", "-f"]
+COPY entrypoint.sh /entrypoint.sh
+
+# Make the entrypoint script executable
+RUN chmod +x /entrypoint.sh
+
+# Use the entrypoint script to start the container
+CMD ["/entrypoint.sh"]

Taskfile.yaml

@@ -0,0 +1,29 @@
+version: "3"
+
+vars:
+  compose_file: "local-compose.yaml"
+  cache_bust:
+    sh: "date +%s"
+
+tasks:
+  build:
+    cmds:
+      - docker compose -f {{.compose_file}} build --build-arg CACHE_BUST={{.cache_bust}}
+  up:
+    cmds:
+      - CACHE_BUST={{.cache_bust}} docker compose -f {{.compose_file}} up --build
+  start:
+    cmds:
+      - docker compose -f {{.compose_file}} up -d
+  down:
+    cmds:
+      - docker compose -f {{.compose_file}} down
+  clean:
+    cmds:
+      - docker system prune -f
+  push:
+    cmds:
+      - docker buildx build --build-arg CACHE_BUST={{.cache_bust}} --platform linux/amd64,linux/arm64 -t registry.infra.nkode.tech/cron-nkode:latest --push .
+  exec:
+    cmds:
+      - docker exec -it cron-nkode bash

backup_cron

@@ -1 +1,3 @@
-0 2 * * * root /usr/local/bin/backup_script.sh -l true >> /var/log/cron.log 2>&1
+SHELL=/bin/bash
+BASH_ENV=/etc/environment
+00 13 * * * /usr/local/bin/backup_script.sh -l true >> /var/log/cron.log 2>&1

docker-compose.yaml

@@ -1,5 +1,5 @@
 services:
-  go-nkode:
+  cron-nkode:
     container_name: cron-nkode
     image: registry.infra.nkode.tech/cron-nkode
     volumes:

docker_build.sh

@@ -1 +1 @@
-docker buildx build --platform linux/amd64,linux/arm64 -t registry.infra.nkode.tech/cron-nkode:latest --push .
+docker buildx build --build-arg CACHE_BUST="$(date +%s)" --platform linux/amd64,linux/arm64 -t registry.infra.nkode.tech/cron-nkode:latest --push .

entrypoint.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+
+# Export AWS environment variables to /etc/environment
+printenv | grep '^AWS_' >> /etc/environment
+
+# Start cron in the foreground
+cron -f

local-compose.yaml

@@ -0,0 +1,15 @@
+services:
+  cron-nkode:
+    container_name: cron-nkode
+    build:
+      context: .
+      dockerfile: Dockerfile
+      args:
+        CACHE_BUST: "${CACHE_BUST}"
+    volumes:
+      - /var/go-nkode/sqlite:/jobs/data/sqlite
+
+    environment:
+      - AWS_ACCESS_KEY_ID=AKIA5VCWLAGKTQVD3RDJ
+      - AWS_SECRET_ACCESS_KEY=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
+      - AWS_REGION=us-east-1