Update readme with how to host and run with docker.

.dockerignore

@@ -0,0 +1,4 @@
+__pycache__
+upload
+venv
+.git

Dockerfile

@@ -0,0 +1,13 @@
+FROM python:3.10-alpine
+
+WORKDIR /usr/src/app
+
+COPY requirements.txt ./
+
+RUN apk add --no-cache --update libmagic \
+    && pip install --no-cache-dir --upgrade pip \
+    && pip install --no-cache-dir -r requirements.txt
+
+COPY . .
+
+CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8000"]

README.md

@@ -1,3 +1,37 @@
 # UpFast
 
 simple tool to host file upload and sharing.
+
+## How to host
+
+### Regular system
+
+To run on a regular system I recommend to use a virtual environment to install the dependencies and run the project from there.
+
+
+```bash
+# Create the virtual environment
+python -m venv venv
+
+# Activate the virtual environment
+source venv/bin/activate
+
+# Install all the requirements
+pip install -r requirements.txt
+
+# Run the project
+uvicorn main:app --host 0.0.0.0 --port 8000
+```
+
+### Docker
+
+In the repo there is an included dockerfile to generate an image from the latest version of everything, to generate an image just run `docker build . -t upfast` (You need root privileges or to be in the docker group).
+
+To run the docker container check the container id with `docker images` command.
+
+> sample docker run command
+```bash
+sudo docker run -p 8000:8000 -v ./upload:/usr/src/app/upload CONTAINER_ID
+```
+
+The sample command will need a upload directory to where you run it from so you can replace ./upload with a different path to save uploaded stuff.