Dockerized chroma arguments customization (#1658)

## Description of changes

*Summarize the changes made by this PR.*
 - New functionality
- Added an ability to customize the default arguments that are passed
from `docker run` or `docker compose` `command` field to `uvicorn
chromadb.app:app`. I needed it to be able to customize the port because
in certain scenarios it cannot be change (i.e. ECS where internal port
is proxies as is). The default arguments are not changed: `--workers 1
--host 0.0.0.0 --port 8000 --proxy-headers --log-config
chromadb/log_config.yml --timeout-keep-alive 30`
	 - Added ENV variables for basic customization with default values:
```	 
CHROMA_HOST_ADDR="0.0.0.0"
CHROMA_HOST_PORT=8000
CHROMA_WORKERS=1
CHROMA_LOG_CONFIG="chromadb/log_config.yml"
CHROMA_TIMEOUT_KEEP_ALIVE=30
```

## Test plan
*How are these changes tested?*

- Tested locally using `docker build` and `docker run` commands
- Tested customization in `docker-compose` - now it works as expected.

## Documentation Changes
*Are all docstrings for user-facing APIs updated if required? Do we need
to make documentation changes in the [docs
repository](https://github.com/chroma-core/docs)?*

TODO: Deployment docs needs to be updated to cover container arguments
customization.

Dockerfile

@@ -25,6 +25,15 @@ COPY --from=builder /install /usr/local
 COPY ./bin/docker_entrypoint.sh /docker_entrypoint.sh
 COPY ./ /chroma
 
+RUN chmod +x /docker_entrypoint.sh
+
+ENV CHROMA_HOST_ADDR "0.0.0.0"
+ENV CHROMA_HOST_PORT 8000
+ENV CHROMA_WORKERS 1
+ENV CHROMA_LOG_CONFIG "chromadb/log_config.yml"
+ENV CHROMA_TIMEOUT_KEEP_ALIVE 30
+
 EXPOSE 8000
 
-CMD ["/docker_entrypoint.sh"]
+ENTRYPOINT ["/docker_entrypoint.sh"]
+CMD [ "--workers ${CHROMA_WORKERS} --host ${CHROMA_HOST_ADDR} --port ${CHROMA_HOST_PORT} --proxy-headers --log-config ${CHROMA_LOG_CONFIG} --timeout-keep-alive ${CHROMA_TIMEOUT_KEEP_ALIVE}"]

bin/docker_entrypoint.sh

@@ -1,5 +1,15 @@
 #!/bin/bash
+set -e
 
 export IS_PERSISTENT=1
 export CHROMA_SERVER_NOFILE=65535
-exec uvicorn chromadb.app:app --workers 1 --host 0.0.0.0 --port 8000 --proxy-headers --log-config chromadb/log_config.yml --timeout-keep-alive 30
+args="$@"
+
+if [[ $args =~ ^uvicorn.* ]]; then
+    echo "Starting server with args: $(eval echo "$args")"
+    echo -e "\033[31mWARNING: Please remove 'uvicorn chromadb.app:app' from your command line arguments. This is now handled by the entrypoint script."
+    exec $(eval echo "$args")
+else
+    echo "Starting 'uvicorn chromadb.app:app' with args: $(eval echo "$args")"
+    exec uvicorn chromadb.app:app $(eval echo "$args")
+fi

docker-compose.test-auth.yml

@@ -11,7 +11,7 @@ services:
       dockerfile: Dockerfile
     volumes:
       - chroma-data:/chroma/chroma
-    command: uvicorn chromadb.app:app --workers 1 --host 0.0.0.0 --port 8000 --log-config chromadb/log_config.yml --timeout-keep-alive 30
+    command: "--workers 1 --host 0.0.0.0 --port 8000 --proxy-headers --log-config chromadb/log_config.yml --timeout-keep-alive 30"
     environment:
       - ANONYMIZED_TELEMETRY=False
       - ALLOW_RESET=True

docker-compose.test.yml

@@ -11,7 +11,7 @@ services:
       dockerfile: Dockerfile
     volumes:
       - chroma-data:/chroma/chroma
-    command: uvicorn chromadb.app:app --workers 1 --host 0.0.0.0 --port 8000 --log-config chromadb/log_config.yml --timeout-keep-alive 30
+    command: "--workers 1 --host 0.0.0.0 --port 8000 --proxy-headers --log-config chromadb/log_config.yml --timeout-keep-alive 30"
     environment:
       - ANONYMIZED_TELEMETRY=False
       - ALLOW_RESET=True

docker-compose.yml

@@ -15,7 +15,7 @@ services:
       # Default configuration for persist_directory in chromadb/config.py
       # Read more about deployments: https://docs.trychroma.com/deployment
       - chroma-data:/chroma/chroma
-    command: uvicorn chromadb.app:app --reload --workers 1 --host 0.0.0.0 --port 8000 --log-config chromadb/log_config.yml --timeout-keep-alive 30
+    command: "--workers 1 --host 0.0.0.0 --port 8000 --proxy-headers --log-config chromadb/log_config.yml --timeout-keep-alive 30"
     environment:
       - IS_PERSISTENT=TRUE
       - CHROMA_SERVER_AUTH_PROVIDER=${CHROMA_SERVER_AUTH_PROVIDER}