Improve Docker Error Handling

[ryanRfox]

As a sandbox user, having concise, meaningful error handling for the required Docker environment is helpful.

Sandbox 1.0 had helpful output:

# sandbox commit 2a34519
./sandbox up

Building a new Docker Image...
 [|]  Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?
    
Initializing data directory for testnet...
docker: Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?.
See 'docker run --help'.

Sandbox 2.0 could be improved:

# commit 0c15c8f
./sandbox up       

Starting default sandbox: nightly
see sandbox.log for detailed progress, or use -v.
* started!

algod version
Traceback (most recent call last):
  File "site-packages/urllib3/connectionpool.py", line 677, in urlopen
  File "site-packages/urllib3/connectionpool.py", line 392, in _make_request
  File "http/client.py", line 1252, in request
  File "http/client.py", line 1298, in _send_request
  File "http/client.py", line 1247, in endheaders
  File "http/client.py", line 1026, in _send_output
  File "http/client.py", line 966, in send
  File "site-packages/docker/transport/unixconn.py", line 43, in connect
ConnectionRefusedError: [Errno 61] Connection refused

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "site-packages/requests/adapters.py", line 449, in send
  File "site-packages/urllib3/connectionpool.py", line 727, in urlopen
  File "site-packages/urllib3/util/retry.py", line 403, in increment
  File "site-packages/urllib3/packages/six.py", line 734, in reraise
  File "site-packages/urllib3/connectionpool.py", line 677, in urlopen
  File "site-packages/urllib3/connectionpool.py", line 392, in _make_request
  File "http/client.py", line 1252, in request
  File "http/client.py", line 1298, in _send_request
  File "http/client.py", line 1247, in endheaders
  File "http/client.py", line 1026, in _send_output
  File "http/client.py", line 966, in send
  File "site-packages/docker/transport/unixconn.py", line 43, in connect
urllib3.exceptions.ProtocolError: ('Connection aborted.', ConnectionRefusedError(61, 'Connection refused'))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "site-packages/docker/api/client.py", line 205, in _retrieve_server_version
  File "site-packages/docker/api/daemon.py", line 181, in version
  File "site-packages/docker/utils/decorators.py", line 46, in inner
  File "site-packages/docker/api/client.py", line 228, in _get
  File "site-packages/requests/sessions.py", line 543, in get
  File "site-packages/requests/sessions.py", line 530, in request
  File "site-packages/requests/sessions.py", line 643, in send
  File "site-packages/requests/adapters.py", line 498, in send
requests.exceptions.ConnectionError: ('Connection aborted.', ConnectionRefusedError(61, 'Connection refused'))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "docker-compose", line 3, in <module>
  File "compose/cli/main.py", line 67, in main
  File "compose/cli/main.py", line 123, in perform_command
  File "compose/cli/command.py", line 69, in project_from_options
  File "compose/cli/command.py", line 132, in get_project
  File "compose/cli/docker_client.py", line 43, in get_client
  File "compose/cli/docker_client.py", line 170, in docker_client
  File "site-packages/docker/api/client.py", line 188, in __init__
  File "site-packages/docker/api/client.py", line 213, in _retrieve_server_version
docker.errors.DockerException: Error while fetching server API version: ('Connection aborted.', ConnectionRefusedError(61, 'Connection refused'))
[78933] Failed to execute script docker-compose

[ian-algorand]

We might need to generally improve error handling here. Thanks for bringing it up.

[michielmulders]

If you want to solve this issue, take a look at our bounty program that rewards improvements to the Algorand Sandbox.