phusion/baseimage-docker

Features

• Minimal Ubuntu Containers - Boots a stripped-down operating system inside a container, omitting unnecessary services to reduce attack surface and image size.
• Base Images with Init Systems - Provides a minimal Ubuntu base image with a proper init system for managing multiple services inside a container.
• Orphaned Process Cleaners - Cleans up orphaned child processes automatically to prevent zombie processes from accumulating over time.
• Container Startup Scripts - Executes all initialization scripts in order during container startup to set up the environment.
• Centralized Environment Variable Stores - Stores environment variables in a shared location so all startup scripts and services inherit them automatically.
• Multi-Daemon Base Images - Provides an Ubuntu-based container image designed for running multiple daemons with process supervision and signal handling.
• Container Shell Access - Provides secure shell access to the container using key-based authentication with password login disabled by default.
• Multi-Process Base Images - Provides a base image that supports running and supervising several daemons simultaneously within a single container.
• Base Images with SSH Servers - Provides a Docker base image with a preconfigured SSH server for secure key-based access to running containers.
• Graceful Shutdowns - Responds to stop signals by halting all running services cleanly before the container stops.
• Container Signal Forwarders - Catches container stop signals and forwards them to all managed services for clean deinitialisation before exit.
• Multi-Daemon Container Managers - Manages several daemons inside a single container, restarting them automatically if they crash.
• Zombie Process Reclamation - Runs a correct init process that automatically cleans up orphaned child processes to prevent zombie accumulation.
• SSH Private Key Authentications - Provides secure shell access for inspecting or administering a running container, restricted to key-based login only.
• Secure SSH Access - Provides a preconfigured OpenSSH server restricted to public-key authentication for secure container shell access.
• Key-Only SSH Daemons - Runs an OpenSSH server restricted to public-key authentication for secure container shell access.
• Container Init Process - Ships a lightweight init process that reaps zombie processes and manages services inside Docker containers.
• Process Supervision - Supervises daemons through a lightweight process manager, restarting them automatically if they crash.
• Cron Scheduling - Uses the traditional cron daemon to execute recurring tasks at configured times inside the container.
• One-Shot Container Commands - Executes a single command inside a new container after starting all system services and process supervisors.
• Container Exec Logins - Runs commands inside a running container using the built-in Docker tool without requiring an SSH daemon.
• Package Installations with Cache Cleanup - Installs software packages and automatically clears the package cache afterward to keep the image small.
• Recurring Job Scheduling - Runs a cron daemon that executes scheduled tasks at configured times without manual intervention.
• Environment Variable Injection - Stores shared environment variables in a central file that all startup scripts and services source automatically.
• Image and Dockerfile Tools - Minimalist base image optimized for container usage.

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