Docker Backblaze B2 command line tool image

Docker image for the official Backblaze B2 command line tool (Backblaze/B2_Command_Line_Tool)

Supported tags and respective Dockerfile links

• latest (Dockerfile)

How to use it

Authorization is done before the command you give is ran.

docker run --rm -v $PWD:/root -e B2_ACCOUNT_ID=$B2_ACCOUNT_ID -e B2_APPLICATION_KEY=$B2_APPLICATION_KEY kimmobrunfeldt/backblaze-b2 b2 list-buckets

will underneath run:

b2 authorize_account your-account-id your-application-key
b2 list-buckets

The options explained:

• --rm Automatically remove the container when it exits
• -v $PWD:/root Map current working directory to /root inside the docker container. Allows reading and writing files between container and host.
• -e Pass environment variable inside the container.

You can see all the available b2 commands by running:

docker run --rm kimmobrunfeldt/backblaze-b2 b2 --help

Using B2 for backups

Before using this method you need to take GPG into use: https://www.liquidweb.com/kb/how-do-i-use-gpg/.

I recommend creating an encrypted file containing the environment variables, so that you can easily backup and restore files later.

Create b2-env.sh file with the contents:

export B2_ACCOUNT_ID=your-account-or-application-id
export B2_APPLICATION_KEY=your-application-key

Now encrypt the file with gpg: gpg -c b2-env.sh and remove the plain text one permanently from disk.

Restore file

You can optionally encrypt your files with GPG before uploading them to B2.

source <(gpg --decrypt b2-env.sh.gpg)

docker run --rm -v $PWD:/root -e B2_ACCOUNT_ID=$B2_ACCOUNT_ID -e B2_APPLICATION_KEY=$B2_APPLICATION_KEY kimmobrunfeldt/backblaze-b2 b2 download_file_by_name MY_BUCKET file-name-in-bucket.tar.gz ./my-file-locally.tar.gz

Backup file

source <(gpg --decrypt b2-env.sh.gpg)

docker run --rm -v $PWD:/root -e B2_ACCOUNT_ID=$B2_ACCOUNT_ID -e B2_APPLICATION_KEY=$B2_APPLICATION_KEY kimmobrunfeldt/backblaze-b2 b2 upload-file MY_BUCKET ./my-file-locally.tar.gz file-name-in-bucket.tar.gz

Build and update process

This image is automatically built at every push of this repository.