USB Mount

Dockerfile

# Use an official lightweight Linux distribution as a base image
FROM ubuntu:latest

# Update package lists and install necessary packages
RUN apt-get update && apt-get install -y \
    sudo \
    util-linux \
    curl \
    mount \
    && rm -rf /var/lib/apt/lists/*

# Create a user to avoid running as root
RUN useradd -ms /bin/bash scriptuser && echo 'scriptuser ALL=(ALL) NOPASSWD:ALL' >> /etc/sudoers
USER scriptuser

# Set the working directory inside the container
WORKDIR /home/scriptuser

# Download the script from the provided URL
RUN curl -o mount_script.sh https://gist.githubusercontent.com/varunsridharan/682b3d80075d9622a33818e81c34c83d/raw/d7ae933d8dbf36cabae66ecc27bbb4c68e49da6d/mount_script.sh

# Make the script executable
RUN chmod +x mount_script.sh

# Set the entry point to run the script
#ENTRYPOINT ["./mount_script.sh"]

CMD ./mount_script.sh && tail -f /dev/null

mount_script.sh

#!/bin/bash

# Get block device information using sudo blkid
blkid_output=$(sudo blkid)
mount_path="/mnt/usb"

# Check if the parent directory exists
if [ ! -d "$mount_path" ]; then
  echo "The specified directory does not exist: $mount_path"
else
	# Find all subdirectories (non-recursive) inside the parent directory
	subdirectories=$(find "$mount_path" -mindepth 1 -maxdepth 1 -type d)

	# Check if there are any subdirectories
	if [ -z "$subdirectories" ]; then
		echo "No subdirectories found in $mount_path"
	else
		# Iterate through each subdirectory and attempt to unmount it
		for subdirectory in $subdirectories; do
		  echo "Attempting to unmount $subdirectory"
		  
		  # Attempt to unmount the subdirectory
		  sudo umount "$subdirectory"
		  
		  # Check if the unmount was successful
		  if [ $? -eq 0 ]; then
			echo "Successfully unmounted $subdirectory"
		  else
			echo "Failed to unmount $subdirectory. It may not be mounted."
		  fi
		done
	fi
fi

# Check if any block devices are available
if [ -z "$blkid_output" ]; then
  echo "No block devices found. Exiting."
  exit 1
fi

# Display available block devices
echo "Available block devices:"
echo "$blkid_output"
echo " "
echo " "

# Define UUIDs to be excluded
excluded_uuids=("5DF9-E225" "91FE-7499" "3b614a3f-4a65-4480-876a-8a998e01ac9b" "56f80fa2-e005-4cca-86e6-19da1069914d")

# Function to check if a given UUID is in the exclusion list
uuid_in_exclude_list() {
  local uuid_to_check="$1"
  for uuid in "${excluded_uuids[@]}"; do
    if [ "${uuid}" == "${uuid_to_check}" ]; then
      return 0  # Match found
    fi
  done
  return 1  # No match found
}

# Iterate through each line of the blkid output
while read -r line; do
  # Extract device path, UUID, and label from the line
  device=$(echo "$line" | cut -d':' -f1)
  uuid=$(echo "$line" | grep -oP ' UUID="\K[^"]+')
  label=$(echo "$line" | grep -oP ' LABEL="\K[^"]+')
  
  # Check if the device has a label and is not in the exclusion list
  if [ -n "$label" ] && ! uuid_in_exclude_list "$uuid"; then
    # Create mount point with the label
    mount_point="$mount_path/$label"

    # Create the mount point if it doesn't exist
    mkdir -p "$mount_point"

    # Mount the device to the specified mount point
    sudo mount "$device" "$mount_point"

    # Check if the mount was successful
    if [ $? -eq 0 ]; then
      echo "Mount successful for $device at $mount_point"
    else
      echo "Error: Failed to mount $device. Skipping."
    fi
  elif [ -z "$label" ]; then
    echo "Warning: No label found for $device. Skipping."
  elif uuid_in_exclude_list "$uuid"; then
    echo "Skipping $device (UUID: $uuid) based on exclusion list."
  fi
done <<< "$blkid_output"