systemd unit for bitcoind

Dockerfile

[Unit]
Description=bitcoind
Requires=docker.service

[Service]
WorkingDirectory=/root
TimeoutStartSec=0

# Kill and rm leftover containers
ExecStartPre=-/bin/docker pull abrkn/bitcoind
ExecStartPre=-/bin/docker pull abrkn/ebs-sidekick
ExecStartPre=-/bin/docker pull abrkn/elb-sidekick
ExecStartPre=-/bin/docker kill bitcoind bitcoind-ebs bitcoind-elb
ExecStartPre=-/bin/docker rm bitcoind bitcoind-ebs bitcoind-elb

# Attach EBS volume
ExecStartPre=/bin/bash -c "\
    docker run \
        -d \
        --name bitcoind-ebs \
        --env AWS_ACCESS_KEY_ID=$(etcdctl get /aws_key) \
        --env AWS_SECRET_ACCESS_KEY=$(etcdctl get /aws_secret) \
        --env VOLUME_ID=$(etcdctl get /bitcoind_volume_id) \
        --env DEVICE=/dev/sdf \
        --env AWS_DEFAULT_REGION=eu-west-1 \
        abrkn/ebs-sidekick ; \
    sleep 10 ; \
    mkdir -p /bitcoind ; \
    [ -z $(lsblk | grep -qs ^xvdf )] &&  mount /dev/xvdf /bitcoind \
"

# Run bitcoind container
ExecStart=/bin/docker run \
    -v /bitcoind:/data \
    -p 8332:8332 \
    --name bitcoind \
    abrkn/bitcoind

# Register to ELB
ExecStartPost=/bin/bash -c "\
    docker run \
        -d \
        --name bitcoind-elb \
        --env AWS_ACCESS_KEY_ID=$(etcdctl get /aws_key) \
        --env AWS_SECRET_ACCESS_KEY=$(etcdctl get /aws_secret) \
        --env ELB_NAME=jc-testing-bitcoind \
        --env AWS_DEFAULT_REGION=eu-west-1 \
        abrkn/elb-sidekick \
"

# Deregister from ELB
ExecStop=/bin/docker stop -t 30 bitcoind-elb
ExecStop=/bin/docker stop -t 60 bitcoind

# Detach EBS volume
ExecStopPost=/bin/bash -c "\
    docker stop bitcoind ; \
    umount /bitcoind ; \
    docker stop bitcoind-ebs \
"

[Install]
WantedBy=multi-user.target