why?

docker-registry.service

[Unit]
Description=Docker Registry
After=docker.service
Requires=docker.service

[Service]
EnvironmentFile=/etc/environment
EnvironmentFile=/etc/profile.d/etcdctl.sh
ExecStartPre=-/usr/bin/docker kill docker-registry
ExecStartPre=-/usr/bin/docker rm docker-registry
ExecStartPre=/usr/bin/docker pull registry:0.9.1
ExecStop=/usr/bin/docker stop docker-registry
ExecStart=/usr/bin/bash -c '\
    _AWS_CONFIG=$(etcdctl get /uact/services/docker-registry/docker-registry-001/aws_settings); \
    _AWS_REGION=$(echo $_AWS_CONFIG | jq -r '"'"'.region'"'"'); \
    _AWS_BUCKET=$(echo $_AWS_CONFIG | jq -r '"'"'.bucket_name'"'"'); \
    _STORAGE_PATH=$(echo $_AWS_CONFIG | jq -r '"'"'.storage_path'"'"'); \
    _AWS_KEY=$(echo $_AWS_CONFIG | jq -r '"'"'.access_key_id'"'"'); \
    _AWS_SECRET=$(echo $_AWS_CONFIG | jq -r '"'"'.secret_access_key'"'"'); \
    _S3_SECURE=$(echo $_AWS_CONFIG | jq -r '"'"'.s3_secure'"'"'); \
    _S3_ENCRYPT=$(echo $_AWS_CONFIG | jq -r '"'"'.s3_encrypt'"'"'); \
    /usr/bin/docker run -e SETTINGS_FLAVOR="s3" \
        -e AWS_REGION="${_AWS_REGION}" \
        -e STORAGE_PATH="${_STORAGE_PATH}" \
        -e AWS_BUCKET="${_AWS_BUCKET}" \
        -e AWS_KEY="${_AWS_KEY}" \
        -e AWS_SECRET="${_AWS_SECRET}" \
        -e S3_SECURE="${_S3_SECURE}" \
        -e S3_ENCRYPT="${_S3_ENCRYPT}" \
        -e SEARCH_BACKEND="sqlalchemy" \
        -p 5000:5000 \
        --name docker-registry -t -i registry:0.9.1'