Railway•10mo ago

Streamlit - Docker App

Hello, I'm testing how to deploy a Python Streamlit app using docker. I have tested locally and it works, however I'm having an issue where I cannot access the actual website. This is my docker file:

FROM python:3.9-slim-bullseye

ARG PORT

WORKDIR /app

RUN apt-get update && apt-get install -y \
    build-essential \
    curl \
    software-properties-common \
    git \
    && rm -rf /var/lib/apt/lists/*

COPY . .

RUN pip3 install -r requirements.txt

EXPOSE $PORT

HEALTHCHECK CMD curl --fail http://localhost:8501/_stcore/health 

ENTRYPOINT ["streamlit", "run", "app.py","--server.port=$PORT","--server.address=0.0.0.0"]

FROM python:3.9-slim-bullseye

ARG PORT

WORKDIR /app

RUN apt-get update && apt-get install -y \
    build-essential \
    curl \
    software-properties-common \
    git \
    && rm -rf /var/lib/apt/lists/*

COPY . .

RUN pip3 install -r requirements.txt

EXPOSE $PORT

HEALTHCHECK CMD curl --fail http://localhost:8501/_stcore/health 

ENTRYPOINT ["streamlit", "run", "app.py","--server.port=$PORT","--server.address=0.0.0.0"]

I have set the $PORT variable in railway. It deploys sucessfully but when it's trying to excecute the streamlit app it gives me this error:

Error: Invalid value for '--server.port': '$PORT' is not a valid integer.

Usage: streamlit run [OPTIONS] TARGET [ARGS]...

Error: Invalid value for '--server.port': '$PORT' is not a valid integer.

Usage: streamlit run [OPTIONS] TARGET [ARGS]...

Solution:

remove the ENTRYPOINT line and replace it with

CMD streamlit run app.py --server.address 0.0.0.0 --server.port $PORT --server.fileWatcherType none --browser.gatherUsageStats false --client.showErrorDetails false --client.toolbarMode minimal

CMD streamlit run app.py --server.address 0.0.0.0 --server.port $PORT --server.fileWatcherType none --browser.gatherUsageStats false --client.showErrorDetails false --client.toolbarMode minimal

read more about this command and all its flags here https://github.com/brody192/streamlit-hello?tab=readme-ov-file#what-makes-this-work-on-railway...

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11 Replies

Percy•10mo ago

Project ID: N/A

ottog.ethOP•10mo ago

PROJECT ID: 84cb72e2-0b70-4a72-9763-be101ea3eaca Project ID: 84cb72e2-0b70-4a72-9763-be101ea3eaca

Brody•10mo ago

please use tripple backticks for these code blocks

ottog.ethOP•10mo ago

Done! thanks for catching that

Solution

Brody•10mo ago

remove the ENTRYPOINT line and replace it with

CMD streamlit run app.py --server.address 0.0.0.0 --server.port $PORT --server.fileWatcherType none --browser.gatherUsageStats false --client.showErrorDetails false --client.toolbarMode minimal

CMD streamlit run app.py --server.address 0.0.0.0 --server.port $PORT --server.fileWatcherType none --browser.gatherUsageStats false --client.showErrorDetails false --client.toolbarMode minimal

read more about this command and all its flags here https://github.com/brody192/streamlit-hello?tab=readme-ov-file#what-makes-this-work-on-railway

ottog.ethOP•10mo ago

Thanks! I tried that and it now builds. However, when I try to access it it https://streamlittest-production.up.railway.app:8501, it never loads

Brody•10mo ago

dont specify the port https://streamlittest-production.up.railway.app/

ottog.ethOP•10mo ago

Thank you so much! this is working now! just as a curiosity, why the entry point line in my docker file wasn't working?

Brody•10mo ago

that was ran in exec mode, so the environment variable $PORT wasn't be escaped to it's set value and thus the literal string $PORT was being passed into the streamlit cli

ottog.ethOP•10mo ago

I see... Thank you so much for your help @Brody !

Brody•10mo ago

no problem!

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Streamlit - Docker App