S3 bucket - repository/tag: invalid reference format.

I am unable to backup docker volume to S3. Trying to run the docker command.

 docker run -d --name 945e1345eed616bbd2a5dd920df2d -e BACKUP_INTERVAL=1m \ S3_BUCKET=33222a9e09 -e AWS_ACCESS_KEY_ID=DFHFHGJHS2KIADCGGD7IBVZQ -e AWS_SECRET_ACCESS_KEY=mbfdbd6kvUgpPlH/7H5/jfJRJnaX1RTJBDF



docker: Error parsing reference: " S3_BUCKET=33222a9e09" is not a valid repository/tag: invalid reference format.

docker: Error parsing reference: "S3_BUCKET=hfghdgfhjdf" is not a valid repository/tag: invalid reference format.

How to configure s3 bucket to the docker  volume backup