Online endpoint deployment failing for custom models

### Operating System

Linux

### Version Information

Python Version: 3.10
SDK: V2
azure-ai-ml package version: 1.8.0

### Steps to reproduce

Hi,

I am following the [notebook](https://github.com/Azure/azureml-examples/blob/main/sdk/python/endpoints/online/managed/online-endpoints-simple-deployment.ipynb) to deploy a model to online endpoint.

While deploying using:

```
model = Model(path="../model-1/model/sklearn_regression_model.pkl")
env = Environment(
image="acrestmlopsdev.azurecr.io/reg_env_dd2",
)

blue_deployment = ManagedOnlineDeployment(
name="blue",
endpoint_name=online_endpoint_name,
model=model,
environment=env,
instance_type="Standard_F4s_v2",
code_configuration=CodeConfiguration(
code="../model-1/onlinescoring", scoring_script="score.py"
),
instance_count=1,
egress_public_network_access="disabled"
)
ml_client.online_deployments.begin_create_or_update(blue_deployment).result()
```

the error occurs: A required package **azureml-inference-server-http** is missing.

The environment we are using is registered in AzureML workspace. Here is how it looks:

The docker and conda dependency file used to create the docker image in ACR is as follows:

**Dockerfile:**
```
# Start with a base image, for example:
# FROM mcr.microsoft.com/azureml/openmpi4.1.0-ubuntu20.04

# Use the provided environment variables for conda and environment file paths

FROM mcr.microsoft.com/azureml/openmpi4.1.0-ubuntu20.04

COPY deps.yml conda_env.yml

RUN rm /bin/sh && ln -s /bin/bash /bin/sh
RUN echo "source /opt/miniconda/etc/profile.d/conda.sh && conda activate" >> ~/.bashrc

RUN cat conda_env.yml

RUN source /opt/miniconda/etc/profile.d/conda.sh && \
conda activate && \
conda install conda && \
pip install cmake && \
conda env update -f conda_env.yml

```

**deps.yml:**
```
name: model-env
channels:
- conda-forge
dependencies:
- python=3.7
- numpy=1.21.2
- pip=21.2.4
- scikit-learn=0.24.2
- scipy=1.7.1
- pip:
- inference-schema[numpy-support]==1.5
- joblib==1.0.1
- azureml-inference-server-http
```

The deps has azureml-inference-server-http as dependencies, the docker builds fine and AzureMl environment build from docker image is fine.

### Expected behavior

Expected behaviour is that the online endpoint deploys properly.

### Actual behavior

Gives following error:

2023-10-25T15:41:55,383013296+00:00 | gunicorn/run |
2023-10-25T15:41:55,384232095+00:00 | gunicorn/run | Entry script directory: /var/azureml-app/onlinescoring/.
2023-10-25T15:41:55,385439495+00:00 | gunicorn/run |
2023-10-25T15:41:55,386724694+00:00 | gunicorn/run | ###############################################
2023-10-25T15:41:55,387960893+00:00 | gunicorn/run | Dynamic Python Package Installation
2023-10-25T15:41:55,389318393+00:00 | gunicorn/run | ###############################################
2023-10-25T15:41:55,390611292+00:00 | gunicorn/run |
2023-10-25T15:41:55,392044492+00:00 | gunicorn/run | Dynamic Python package installation is disabled.
2023-10-25T15:41:55,393430091+00:00 | gunicorn/run |
2023-10-25T15:41:55,394692890+00:00 | gunicorn/run | ###############################################
2023-10-25T15:41:55,395941190+00:00 | gunicorn/run | Checking if the Python package azureml-inference-server-http is installed
2023-10-25T15:41:55,397200089+00:00 | gunicorn/run | ###############################################
2023-10-25T15:41:55,398420089+00:00 | gunicorn/run |
2023-10-25T15:41:55,663463169+00:00 | gunicorn/run | A required package azureml-inference-server-http is missing. Please install azureml-inference-server-http before trying again
2023-10-25T15:41:55,666521767+00:00 - gunicorn/finish 100 0
2023-10-25T15:41:55,667702367+00:00 - Exit code 100 is not normal. Killing image

### Addition information

_No response_

Start with online-endpoints-simple-deployment.ipynb and compare its ManagedOnlineDeployment setup with the reported Dockerfile and deps.yml. Reproduce the deployment using the shown environment and inspect the endpoint startup logs. Done means the custom model deploys successfully without the azureml-inference-server-http missing-package error.

Written by the indexing model from the issue text.