chore!: remove --env from llama stack run (#3711)

# What does this PR do?
user can simply set env vars in the beginning of the command.`FOO=BAR
llama stack run ...`

## Test Plan
Run
TELEMETRY_SINKS=coneol uv run --with llama-stack llama stack build
--distro=starter --image-type=venv --run




---
[//]: # (BEGIN SAPLING FOOTER)
Stack created with [Sapling](https://sapling-scm.com). Best reviewed
with
[ReviewStack](https://reviewstack.dev/llamastack/llama-stack/pull/3711).
* #3714
* __->__ #3711

docs/docs/distributions/building_distro.mdx

@@ -289,10 +289,10 @@ After this step is successful, you should be able to find the built container im
 docker run -d \
   -p $LLAMA_STACK_PORT:$LLAMA_STACK_PORT \
   -v ~/.llama:/root/.llama \
+  -e INFERENCE_MODEL=$INFERENCE_MODEL \
+  -e OLLAMA_URL=http://host.docker.internal:11434 \
   localhost/distribution-ollama:dev \
-  --port $LLAMA_STACK_PORT \
-  --env INFERENCE_MODEL=$INFERENCE_MODEL \
-  --env OLLAMA_URL=http://host.docker.internal:11434
+  --port $LLAMA_STACK_PORT
 ```
 
 Here are the docker flags and their uses:
@@ -305,12 +305,12 @@ Here are the docker flags and their uses:
 
 * `localhost/distribution-ollama:dev`: The name and tag of the container image to run
 
+* `-e INFERENCE_MODEL=$INFERENCE_MODEL`: Sets the INFERENCE_MODEL environment variable in the container
+
+* `-e OLLAMA_URL=http://host.docker.internal:11434`: Sets the OLLAMA_URL environment variable in the container
+
 * `--port $LLAMA_STACK_PORT`: Port number for the server to listen on
 
-* `--env INFERENCE_MODEL=$INFERENCE_MODEL`: Sets the model to use for inference
-
-* `--env OLLAMA_URL=http://host.docker.internal:11434`: Configures the URL for the Ollama service
-
 </TabItem>
 </Tabs>
 
@@ -320,23 +320,22 @@ Now, let's start the Llama Stack Distribution Server. You will need the YAML con
 
 ```
 llama stack run -h
-usage: llama stack run [-h] [--port PORT] [--image-name IMAGE_NAME] [--env KEY=VALUE]
+usage: llama stack run [-h] [--port PORT] [--image-name IMAGE_NAME]
                        [--image-type {venv}] [--enable-ui]
-                       [config | template]
+                       [config | distro]
 
 Start the server for a Llama Stack Distribution. You should have already built (or downloaded) and configured the distribution.
 
 positional arguments:
-  config | template     Path to config file to use for the run or name of known template (`llama stack list` for a list). (default: None)
+  config | distro       Path to config file to use for the run or name of known distro (`llama stack list` for a list). (default: None)
 
 options:
   -h, --help            show this help message and exit
   --port PORT           Port to run the server on. It can also be passed via the env var LLAMA_STACK_PORT. (default: 8321)
   --image-name IMAGE_NAME
-                        Name of the image to run. Defaults to the current environment (default: None)
-  --env KEY=VALUE       Environment variables to pass to the server in KEY=VALUE format. Can be specified multiple times. (default: None)
+                        [DEPRECATED] This flag is no longer supported. Please activate your virtual environment before running. (default: None)
   --image-type {venv}
-                        Image Type used during the build. This should be venv. (default: None)
+                        [DEPRECATED] This flag is no longer supported. Please activate your virtual environment before running. (default: None)
   --enable-ui           Start the UI server (default: False)
 ```
 
@@ -348,9 +347,6 @@ llama stack run tgi
 
 # Start using config file
 llama stack run ~/.llama/distributions/llamastack-my-local-stack/my-local-stack-run.yaml
-
-# Start using a venv
-llama stack run --image-type venv ~/.llama/distributions/llamastack-my-local-stack/my-local-stack-run.yaml
 ```
 
 ```

docs/docs/distributions/configuration.mdx

@@ -101,7 +101,7 @@ A few things to note:
 - The id is a string you can choose freely.
 - You can instantiate any number of provider instances of the same type.
 - The configuration dictionary is provider-specific.
-- Notice that configuration can reference environment variables (with default values), which are expanded at runtime. When you run a stack server (via docker or via `llama stack run`), you can specify `--env OLLAMA_URL=http://my-server:11434` to override the default value.
+- Notice that configuration can reference environment variables (with default values), which are expanded at runtime. When you run a stack server, you can set environment variables in your shell before running `llama stack run` to override the default values.
 
 ### Environment Variable Substitution
 
@@ -173,13 +173,10 @@ optional_token: ${env.OPTIONAL_TOKEN:+}
 
 #### Runtime Override
 
-You can override environment variables at runtime when starting the server:
+You can override environment variables at runtime by setting them in your shell before starting the server:
 
 ```bash
-# Override specific environment variables
-llama stack run --config run.yaml --env API_KEY=sk-123 --env BASE_URL=https://custom-api.com
-
-# Or set them in your shell
+# Set environment variables in your shell
 export API_KEY=sk-123
 export BASE_URL=https://custom-api.com
 llama stack run --config run.yaml

docs/docs/distributions/remote_hosted_distro/watsonx.md

@@ -69,10 +69,10 @@ docker run \
   -it \
   -p $LLAMA_STACK_PORT:$LLAMA_STACK_PORT \
   -v ./run.yaml:/root/my-run.yaml \
+  -e WATSONX_API_KEY=$WATSONX_API_KEY \
+  -e WATSONX_PROJECT_ID=$WATSONX_PROJECT_ID \
+  -e WATSONX_BASE_URL=$WATSONX_BASE_URL \
   llamastack/distribution-watsonx \
   --config /root/my-run.yaml \
-  --port $LLAMA_STACK_PORT \
-  --env WATSONX_API_KEY=$WATSONX_API_KEY \
-  --env WATSONX_PROJECT_ID=$WATSONX_PROJECT_ID \
-  --env WATSONX_BASE_URL=$WATSONX_BASE_URL
+  --port $LLAMA_STACK_PORT
 ```

docs/docs/distributions/self_hosted_distro/dell.md

@@ -129,11 +129,11 @@ docker run -it \
   # NOTE: mount the llama-stack / llama-model directories if testing local changes else not needed
   -v $HOME/git/llama-stack:/app/llama-stack-source -v $HOME/git/llama-models:/app/llama-models-source \
   # localhost/distribution-dell:dev if building / testing locally
-  llamastack/distribution-dell\
-  --port $LLAMA_STACK_PORT  \
-  --env INFERENCE_MODEL=$INFERENCE_MODEL \
-  --env DEH_URL=$DEH_URL \
-  --env CHROMA_URL=$CHROMA_URL
+  -e INFERENCE_MODEL=$INFERENCE_MODEL \
+  -e DEH_URL=$DEH_URL \
+  -e CHROMA_URL=$CHROMA_URL \
+  llamastack/distribution-dell \
+  --port $LLAMA_STACK_PORT
 
 ```
 
@@ -154,14 +154,14 @@ docker run \
   -p $LLAMA_STACK_PORT:$LLAMA_STACK_PORT \
   -v $HOME/.llama:/root/.llama \
   -v ./llama_stack/distributions/tgi/run-with-safety.yaml:/root/my-run.yaml \
+  -e INFERENCE_MODEL=$INFERENCE_MODEL \
+  -e DEH_URL=$DEH_URL \
+  -e SAFETY_MODEL=$SAFETY_MODEL \
+  -e DEH_SAFETY_URL=$DEH_SAFETY_URL \
+  -e CHROMA_URL=$CHROMA_URL \
   llamastack/distribution-dell \
   --config /root/my-run.yaml \
-  --port $LLAMA_STACK_PORT \
-  --env INFERENCE_MODEL=$INFERENCE_MODEL \
-  --env DEH_URL=$DEH_URL \
-  --env SAFETY_MODEL=$SAFETY_MODEL \
-  --env DEH_SAFETY_URL=$DEH_SAFETY_URL \
-  --env CHROMA_URL=$CHROMA_URL
+  --port $LLAMA_STACK_PORT
 ```
 
 ### Via venv
@@ -170,21 +170,21 @@ Make sure you have done `pip install llama-stack` and have the Llama Stack CLI a
 
 ```bash
 llama stack build --distro dell --image-type venv
-llama stack run dell
-  --port $LLAMA_STACK_PORT \
-  --env INFERENCE_MODEL=$INFERENCE_MODEL \
-  --env DEH_URL=$DEH_URL \
-  --env CHROMA_URL=$CHROMA_URL
+INFERENCE_MODEL=$INFERENCE_MODEL \
+DEH_URL=$DEH_URL \
+CHROMA_URL=$CHROMA_URL \
+llama stack run dell \
+  --port $LLAMA_STACK_PORT
 ```
 
 If you are using Llama Stack Safety / Shield APIs, use:
 
 ```bash
+INFERENCE_MODEL=$INFERENCE_MODEL \
+DEH_URL=$DEH_URL \
+SAFETY_MODEL=$SAFETY_MODEL \
+DEH_SAFETY_URL=$DEH_SAFETY_URL \
+CHROMA_URL=$CHROMA_URL \
 llama stack run ./run-with-safety.yaml \
-  --port $LLAMA_STACK_PORT \
-  --env INFERENCE_MODEL=$INFERENCE_MODEL \
-  --env DEH_URL=$DEH_URL \
-  --env SAFETY_MODEL=$SAFETY_MODEL \
-  --env DEH_SAFETY_URL=$DEH_SAFETY_URL \
-  --env CHROMA_URL=$CHROMA_URL
+  --port $LLAMA_STACK_PORT
 ```

docs/docs/distributions/self_hosted_distro/meta-reference-gpu.md

@@ -84,9 +84,9 @@ docker run \
   --gpu all \
   -p $LLAMA_STACK_PORT:$LLAMA_STACK_PORT \
   -v ~/.llama:/root/.llama \
+  -e INFERENCE_MODEL=meta-llama/Llama-3.2-3B-Instruct \
   llamastack/distribution-meta-reference-gpu \
-  --port $LLAMA_STACK_PORT \
-  --env INFERENCE_MODEL=meta-llama/Llama-3.2-3B-Instruct
+  --port $LLAMA_STACK_PORT
 ```
 
 If you are using Llama Stack Safety / Shield APIs, use:
@@ -98,10 +98,10 @@ docker run \
   --gpu all \
   -p $LLAMA_STACK_PORT:$LLAMA_STACK_PORT \
   -v ~/.llama:/root/.llama \
+  -e INFERENCE_MODEL=meta-llama/Llama-3.2-3B-Instruct \
+  -e SAFETY_MODEL=meta-llama/Llama-Guard-3-1B \
   llamastack/distribution-meta-reference-gpu \
-  --port $LLAMA_STACK_PORT \
-  --env INFERENCE_MODEL=meta-llama/Llama-3.2-3B-Instruct \
-  --env SAFETY_MODEL=meta-llama/Llama-Guard-3-1B
+  --port $LLAMA_STACK_PORT
 ```
 
 ### Via venv
@@ -110,16 +110,16 @@ Make sure you have done `uv pip install llama-stack` and have the Llama Stack CL
 
 ```bash
 llama stack build --distro meta-reference-gpu --image-type venv
+INFERENCE_MODEL=meta-llama/Llama-3.2-3B-Instruct \
 llama stack run distributions/meta-reference-gpu/run.yaml \
-  --port 8321 \
-  --env INFERENCE_MODEL=meta-llama/Llama-3.2-3B-Instruct
+  --port 8321
 ```
 
 If you are using Llama Stack Safety / Shield APIs, use:
 
 ```bash
+INFERENCE_MODEL=meta-llama/Llama-3.2-3B-Instruct \
+SAFETY_MODEL=meta-llama/Llama-Guard-3-1B \
 llama stack run distributions/meta-reference-gpu/run-with-safety.yaml \
-  --port 8321 \
-  --env INFERENCE_MODEL=meta-llama/Llama-3.2-3B-Instruct \
-  --env SAFETY_MODEL=meta-llama/Llama-Guard-3-1B
+  --port 8321
 ```

docs/docs/distributions/self_hosted_distro/nvidia.md

@@ -129,10 +129,10 @@ docker run \
   --pull always \
   -p $LLAMA_STACK_PORT:$LLAMA_STACK_PORT \
   -v ./run.yaml:/root/my-run.yaml \
+  -e NVIDIA_API_KEY=$NVIDIA_API_KEY \
   llamastack/distribution-nvidia \
   --config /root/my-run.yaml \
-  --port $LLAMA_STACK_PORT \
-  --env NVIDIA_API_KEY=$NVIDIA_API_KEY
+  --port $LLAMA_STACK_PORT
 ```
 
 ### Via venv
@@ -142,10 +142,10 @@ If you've set up your local development environment, you can also build the imag
 ```bash
 INFERENCE_MODEL=meta-llama/Llama-3.1-8B-Instruct
 llama stack build --distro nvidia --image-type venv
+NVIDIA_API_KEY=$NVIDIA_API_KEY \
+INFERENCE_MODEL=$INFERENCE_MODEL \
 llama stack run ./run.yaml \
-  --port 8321 \
-  --env NVIDIA_API_KEY=$NVIDIA_API_KEY \
-  --env INFERENCE_MODEL=$INFERENCE_MODEL
+  --port 8321
 ```
 
 ## Example Notebooks