Docker notes.yaml

Docker installation on Mac:
brew install --cask docker
open /Applications/Docker.app
docker --version

Find the installation location:
find /Applications/Docker.app -name docker

Run Docker Using the Full Path:
/Applications/Docker.app/Contents/Resources/bin/docker --version

Add to PATH:
export PATH="/Applications/Docker.app/Contents/Resources/bin:$PATH"

Then, you'll need to apply the changes with:
source ~/.zshrc

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Docker file instructions:

Create a Dockerfile like this:
    #Use the official image as a parent image of python from Dockerhub:
    FROM python:3.9
    #create a new directory in the container. It automatically moves into it:
    WORKDIR /fastapi-app 
    #copying the requirements file to the new directory in the container:
    COPY requirements.txt . 
    #installing the requirements file:
    RUN pip install -r requirements.txt 
    #copying the app folder to the new directory in the container:
    COPY ./app ./app 
    #Run command in terminal to start the app:
    CMD ["python", "./app/main.py"]

docker build -t <name_of_docker_image> .  

docker run <name_of_docker_image> 
If you want to map the ports from the container to the "outside" world:
docker run -p 8000:8000 <name_of_docker_image> #map the ports 

If we want to list all dockers running:
docker ps

If we want to list all docker images:
docker image ls

To add a tag to a docker image:
docker tag <name_of_docker_image>:latest mascobot/<name_of_docker_image>:marcotag88

To login and logout:
docker login
docker logout

To push to image with tag to DockerHub:
docker push mascobot/<name_of_docker_image>:marcotag88    <--- this is the name of the image in DockerHub and if it doesn't exist it will create a new one as Public (default)

If we want to open a terminal inside the container once it's already running:
docker exec -it <container ID> /bin/sh