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Extract tar.gz, .tar, .rpm, and .deb Files

This folder contains instructions to set up a Linux container that automatically extracts all archives placed in the files/ folder.

Usage

Starting the Container

  1. Navigate to this folder
    Open your terminal and go to the folder containing the docker-compose.yml file.

  2. Run the command:

     docker compose up -d

Explanation: This command will download the necessary image, mount the files/ folder into the container, extract all supported files, and leave the results in the mounted folder.

Explanation

docker-compose.yml

services:
  extractor:
    build: .
    volumes:
      - ./files:/files

Explanation:

  • build: . → Builds the container image from the Dockerfile in this directory.
  • volumes → Mounts the local files/ folder into the container at /files so extracted files remain accessible on the host.

Dockerfile

The Dockerfile defines the extraction image:

# Use Ubuntu base image
FROM ubuntu:latest

# Install tools for .deb, .rpm, and tar.gz files
RUN apt-get update && \
    apt-get install -y \
    dpkg \
    rpm2cpio \
    cpio \
    tar \
    gzip && \
    apt-get clean

# Set working directory
WORKDIR /files

# Run extraction script at container startup
CMD bash -c "for file in *; do \
    case \"\$file\" in \
        *.deb) mkdir \"\${file%.deb}\" && dpkg-deb -x \"\$file\" \"\${file%.deb}\" && rm \"\$file\" ;; \
        *.rpm) mkdir \"\${file%.rpm}\" && rpm2cpio \"\$file\" | cpio -idmv -D \"\${file%.rpm}\" && rm \"\$file\" ;; \
        *.tar.gz) mkdir -p \"\${file%.tar.gz}\" && echo \"Extracting: \$file\" && tar -xzf \"\$file\" -C \"\${file%.tar.gz}\" && rm \"\$file\" ;; \
        *.tar) mkdir -p \"\${file%.tar}\" && echo \"Extracting: \$file\" && tar -xf \"\$file\" -C \"\${file%.tar}\" && rm \"\$file\" ;; \
    esac; done"

Key Points:

  • Installs necessary extraction tools: dpkg, rpm2cpio, cpio, tar, and gzip.
  • Uses a loop in the CMD to detect file types and extract them into folders named after each archive.
  • Removes the original archive after extraction.
  • The files/ folder on the host will contain the extracted contents automatically.

This setup provides a ready-to-use Linux container for quickly extracting multiple archive types, useful for learning Docker volume mounting, automation scripts, and Linux package management.