CONTAINER MANAGEMENT USING PODMAN

Create FastAPI Application

First, create simple application with fastapi.

from fastapi import FastAPI

app = FastAPI()


@app.get("/")
async def root():
    return {"pesan": "Halo Dunia"}

Create Containerfile for fastapi

Create Containerfile.

FROM python:3.8.5-alpine

WORKDIR /app

ENV PYTHONDONTWRITEBYTECODE 1
ENV PYTHONUNBUFFERED 1

COPY ./requirements.txt /app/requirements.txt

RUN set -eux \
    && apk add --no-cache --virtual .build-deps build-base libressl-dev libffi-dev gcc musl-dev python3-dev \
    && pip install --upgrade pip setuptools wheel \
    && pip install -r /app/requirements.txt \
    && rm -rf /root/.cache/pip

COPY . /app/

Build and Deploy container using Podman

When Containerfile already created, now build images of fastapi application.

$ podman build -t fastapi .

Check if images successfully created.

$ podman images
REPOSITORY                TAG           IMAGE ID      CREATED         SIZE
localhost/fastapi         latest        b6e2a7315140  17 seconds ago  520 MB
docker.io/library/python  3.8.5-alpine  0f03316d4a27  10 months ago   44.7 MB

And then deploy the image to container.

$ podman run -dt -p 8000:8000/tcp localhost/fastapi

Finally check if container already run.

$ podman ps -a
CONTAINER ID  IMAGE                     COMMAND               CREATED         STATUS             PORTS                   NAMES
3f7474cd97c5  localhost/fastapi:latest  uvicorn server.ap...  52 seconds ago  Up 51 seconds ago  0.0.0.0:8000->8000/tcp  nervous_galois

Testing application in container

Testing url of container using curl.

$ curl localhost:8000
{"pesan": "Halo Dunia"}

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Reference

Fastapi Tutorial

Podman Container Tutorial

Podman Pod Tutorial