FastAPI Example

The following example steps through the process of building a container image and running the application using Podman.

A good simple example is the single file FastAPI application which serve static web pages:

Single file FastAPI application

We'll be using the following image:

podman pull registry.access.redhat.com/ubi9/python-312:latest

Examine the Containerfile

Containerfile

FROM registry.access.redhat.com/ubi9/python-312:latest

LABEL maintainer="Richard Walker"

ENV PYTHONUNBUFFERED=1 \
    PYTHONIOENCODING=UTF-8

WORKDIR /opt/app-root/src

COPY . /opt/app-root/src

RUN pip install --upgrade pip
RUN pip install -r requirements.txt

USER root

RUN chown -R 1001:1001 /opt/app-root/src
RUN chmod -R 775 /opt/app-root/src

EXPOSE 8080

USER 1001

CMD python main.py

Build a container image:

podman build -t localhost/fastapi-serve-static:1.0.0 .

Run container:

podman run -d -p 8080:8080 --name fastapi-serve-static localhost/fastapi-serve-static:1.0.0

Check it is running:

podman ps

CONTAINER ID  IMAGE                                 COMMAND               CREATED        STATUS        PORTS                             NAMES
ad23d40a9dfd  localhost/fastapi-serve-static:1.0.0  /bin/sh -c python...  3 seconds ago  Up 4 seconds  0.0.0.0:8080->8080/tcp, 8080/tcp  fastapi-serve-static

The application should now be accessible at http://localhost:8080