ImageNormalizer: FileNotFoundError(2, 'No such file or directory')

ImageNormalizer can't seem to find the files despite them quite clearly existing. Perhaps it's looking in its own Docker container instead of the current dir?

### My code

```python
from jina import Flow
from jina.types.document.generators import from_files

docs = from_files("data/**/*.png")

flow = Flow(protocol="http", port_expose=4352).add(
uses="jinahub+docker://ImageNormalizer",
name="crafter",
)

with flow:
flow.post(on="/index", inputs=docs)
flow.block()
```

### Error log

```
crafter@55310[L]:ready and listening
gateway@55310[L]:ready and listening
crafter@55334[I]:
crafter@55334[I]:▶️ /usr/local/bin/jina executor --uses config.yml --name crafter --workspace /home/alexcg/tmp/jina/clip-hub-test --identity 6ec761b1-b48b-42f2-8657-f1ea972048ed --workspace-id cd6d14a4-3b1a-41a6-b1bc-00f2fae1f0ad --zmq-identity 45d1bad1-9106-4370-b915-e417edd4d518 --port-ctrl 36367 --port-in 38271 --port-out 59533 --hosts-in-connect --socket-in ROUTER_BIND --socket-out ROUTER_BIND --num-part 1 --dynamic-routing-out --dynamic-routing-in --port-expose 4352 --upload-files --noblock-on-start --runs-in-docker
crafter@55334[I]:🔧️ cli = executor
crafter@55334[I]:ctrl-with-ipc = False
crafter@55334[I]:daemon = False
crafter@55334[I]:disable-remote = False
crafter@55334[I]:docker-kwargs = None
crafter@55334[I]:dynamic-routing = True
crafter@55334[I]:🔧️ dynamic-routing-in = True
crafter@55334[I]:🔧️ dynamic-routing-out = True
crafter@55334[I]:entrypoint = None
crafter@55334[I]:env = None
crafter@55334[I]:expose-public = False
crafter@55334[I]:external = False
crafter@55334[I]:gpus = None
crafter@55334[I]:host = 0.0.0.0
crafter@55334[I]:host-in = 0.0.0.0
crafter@55334[I]:host-out = 0.0.0.0
crafter@55334[I]:🔧️ hosts-in-connect = []
crafter@55334[I]:🔧️ identity = 6ec761b1-b48b-42f2-8657-f1ea97
crafter@55334[I]:log-config = /usr/local/lib/python3.7/site-
crafter@55334[I]:memory-hwm = -1
crafter@55334[I]:🔧️ name = crafter
crafter@55334[I]:🔧️ noblock-on-start = True
crafter@55334[I]:🔧️ num-part = 1
crafter@55334[I]:on-error-strategy = IGNORE
crafter@55334[I]:parallel = 1
crafter@55334[I]:pea-id = 0
crafter@55334[I]:pea-role = SINGLETON
crafter@55334[I]:peas-hosts = None
crafter@55334[I]:pod-role = None
crafter@55334[I]:polling = ANY
crafter@55334[I]:🔧️ port-ctrl = 36367
crafter@55334[I]:🔧️ port-expose = 4352
crafter@55334[I]:🔧️ port-in = 38271
crafter@55334[I]:🔧️ port-out = 59533
crafter@55334[I]:proxy = False
crafter@55334[I]:pull-latest = False
crafter@55334[I]:py-modules = None
crafter@55334[I]:quiet = False
crafter@55334[I]:quiet-error = False
crafter@55334[I]:quiet-remote-logs = False
crafter@55334[I]:replicas = 1
crafter@55334[I]:🔧️ runs-in-docker = True
crafter@55334[I]:runtime-backend = PROCESS
crafter@55334[I]:runtime-cls = ZEDRuntime
crafter@55334[I]:scheduling = LOAD_BALANCE
crafter@55334[I]:🔧️ socket-in = ROUTER_BIND
crafter@55334[I]:🔧️ socket-out = ROUTER_BIND
crafter@55334[I]:ssh-keyfile = None
crafter@55334[I]:ssh-password = None
crafter@55334[I]:ssh-server = None
crafter@55334[I]:timeout-ctrl = 5000
crafter@55334[I]:timeout-ready = 600000
crafter@55334[I]:🔧️ upload-files = []
crafter@55334[I]:🔧️ uses = config.yml
crafter@55334[I]:uses-after = None
crafter@55334[I]:uses-before = None
crafter@55334[I]:uses-metas = None
crafter@55334[I]:uses-with = None
crafter@55334[I]:volumes = None
crafter@55334[I]:🔧️ workspace = /home/alexcg/tmp/jina/clip-hub
crafter@55334[I]:🔧️ workspace-id = cd6d14a4-3b1a-41a6-b1bc-00f2fa
crafter@55334[I]:🔧️ zmq-identity = 45d1bad1-9106-4370-b915-e417ed
crafter@55334[I]:
crafter@55334[I]: JINA@ 1[W]:You are using Jina version 2.0.14, however version 2.0.15 is available. You should consider upgrading via the "pip install --upgrade jina" command.
Flow@55310[I]:🎉 Flow is ready to use!
🔗 Protocol: HTTP
🏠 Local access: 0.0.0.0:4352
🔒 Private network: 192.168.3.16:4352
🌐 Public address: 94.135.231.132:4352
💬 Swagger UI: http://localhost:4352/docs
📚 Redoc: http://localhost:4352/redoc
crafter@55334[I]: crafter@17[E]:FileNotFoundError(2, 'No such file or directory')
crafter@55334[I]:add "--quiet-error" to suppress the exception details
crafter@55334[I]:Traceback (most recent call last):
crafter@55334[I]:File "/usr/local/lib/python3.7/site-packages/jina/peapods/runtimes/zmq/zed.py", line 313, in _msg_callback
crafter@55334[I]:processed_msg = self._callback(msg)
crafter@55334[I]:File "/usr/local/lib/python3.7/site-packages/jina/peapods/runtimes/zmq/zed.py", line 299, in _callback
crafter@55334[I]:self._pre_hook(msg)._handle()._post_hook(msg)
crafter@55334[I]:File "/usr/local/lib/python3.7/site-packages/jina/peapods/runtimes/zmq/zed.py", line 251, in _handle
crafter@55334[I]:groundtruths_matrix=self.groundtruths_matrix,
crafter@55334[I]:File "/usr/local/lib/python3.7/site-packages/jina/executors/__init__.py", line 190, in __call__
crafter@55334[I]:self, **kwargs
crafter@55334[I]:File "/usr/local/lib/python3.7/site-packages/jina/executors/decorators.py", line 103, in arg_wrapper
crafter@55334[I]:return fn(*args, **kwargs)
crafter@55334[I]:File "/image_normalizer/normalizer.py", line 56, in craft
crafter@55334[I]:self._convert_image_to_blob(doc)
crafter@55334[I]:File "/image_normalizer/normalizer.py", line 67, in _convert_image_to_blob
crafter@55334[I]:doc.convert_image_uri_to_blob()
crafter@55334[I]:File "/usr/local/lib/python3.7/site-packages/jina/types/document/__init__.py", line 1044, in convert_image_uri_to_blob
crafter@55334[I]:(uri_prefix + self.uri) if uri_prefix else self.uri, color_axis
crafter@55334[I]:File "/usr/local/lib/python3.7/site-packages/jina/types/document/converters.py", line 92, in to_image_blob
crafter@55334[I]:raw_img = Image.open(source).convert('RGB')
crafter@55334[I]:File "/usr/local/lib/python3.7/site-packages/PIL/Image.py", line 2912, in open
crafter@55334[I]:fp = builtins.open(filename, "rb")
crafter@55334[I]:FileNotFoundError: [Errno 2] No such file or directory: 'data/44.png'
crafter@55334[I]: crafter@17[E]:FileNotFoundError(2, 'No such file or directory')
crafter@55334[I]:add "--quiet-error" to suppress the exception details
crafter@55334[I]:Traceback (most recent call last):
crafter@55334[I]:File "/usr/local/lib/python3.7/site-packages/jina/peapods/runtimes/zmq/zed.py", line 313, in _msg_callback
crafter@55334[I]:processed_msg = self._callback(msg)
crafter@55334[I]:File "/usr/local/lib/python3.7/site-packages/jina/peapods/runtimes/zmq/zed.py", line 299, in _callback
crafter@55334[I]:self._pre_hook(msg)._handle()._post_hook(msg)
crafter@55334[I]:File "/usr/local/lib/python3.7/site-packages/jina/peapods/runtimes/zmq/zed.py", line 251, in _handle
crafter@55334[I]:groundtruths_matrix=self.groundtruths_matrix,
crafter@55334[I]:File "/usr/local/lib/python3.7/site-packages/jina/executors/__init__.py", line 190, in __call__
crafter@55334[I]:self, **kwargs
crafter@55334[I]:File "/usr/local/lib/python3.7/site-packages/jina/executors/decorators.py", line 103, in arg_wrapper
crafter@55334[I]:return fn(*args, **kwargs)
crafter@55334[I]:File "/image_normalizer/normalizer.py", line 56, in craft
crafter@55334[I]:self._convert_image_to_blob(doc)
crafter@55334[I]:File "/image_normalizer/normalizer.py", line 67, in _convert_image_to_blob
crafter@55334[I]:doc.convert_image_uri_to_blob()
crafter@55334[I]:File "/usr/local/lib/python3.7/site-packages/jina/types/document/__init__.py", line 1044, in convert_image_uri_to_blob
crafter@55334[I]:(uri_prefix + self.uri) if uri_prefix else self.uri, color_axis
crafter@55334[I]:File "/usr/local/lib/python3.7/site-packages/jina/types/document/converters.py", line 92, in to_image_blob
crafter@55334[I]:raw_img = Image.open(source).convert('RGB')
crafter@55334[I]:File "/usr/local/lib/python3.7/site-packages/PIL/Image.py", line 2912, in open
crafter@55334[I]:fp = builtins.open(filename, "rb")
crafter@55334[I]:FileNotFoundError: [Errno 2] No such file or directory: 'data/109.png'

```

I've tried adding options with `uses_with`, but no change. Note the above program is the simplest version possible. My initial efforts had a lot more Executors.

### `jina -v`

`2.0.10`