Update Dockerfile: Use Poetry instead of Pip

Also:
Remove multi-stage (Need to be added in the future to minimize the image)

.dockerignore

@@ -109,6 +109,7 @@ venv/
 ENV/
 env.bak/
 venv.bak/
+.env.example
 
 # Spyder project settings
 .spyderproject
@@ -144,12 +145,10 @@ tests/
 # https://github.com/marketplace/renovate
 renovate.json
 
-# Other files not needed in the Docker image
+# Git files and directories
 .git/
-README.md
+.gitignore
-pyproject.toml
+
-poetry.lock
+# Docker files
-LICENSE
 docker-compose.yml
 Dockerfile
-.gitignore

Dockerfile

@@ -1,71 +1,48 @@
-# We have two stages, one for making the virtual environment and
+FROM python:3.10-slim
-# installing the dependencies and another for running the uvicorn server.
+# TODO: Do the Poetry stuff in its own stage
-# We use an virtual environment so we seperate the dependencies from the
+# TODO: Add support for logging
-# system-level dependencies.
+# TODO: Add health check
-FROM python:3.10-slim AS build-image
+# TODO: Add support for changing uid/gid
+# TODO: Add support for changing host and port
 
-# Create virtual environment in /opt/venv, we will use this in the other
+# We don't want apt-get to interact with us and we want the default answers to be used for all questions.
-# stage.
+ARG DEBIAN_FRONTEND=noninteractive
-RUN python -m venv /opt/venv
 
-# Make sure we use the virtualenv.
+# Force the stdout and stderr streams to be unbuffered.
-ENV PATH="/opt/venv/bin:$PATH"
+# Will allow log messages to be immediately dumped instead of being buffered.
+# This is useful when the bot crashes before writing messages stuck in the buffer.
+ENV PYTHONUNBUFFERED 1
 
-# Copy requirements.txt to the container, it was generated with
+# Update the system and install curl, it is needed for downloading Poetry.
-# 'poetry export -f requirements.txt --without-hashes'
+RUN apt-get update && apt-get install curl ffmpeg -y --no-install-recommends
-# Note that if we pipe the output of the commmand to requirements.txt in
-# Windows, it will be UTF-16 LE encoded.
-COPY requirements.txt .
 
-# Install the requirements.
+# 1. Create user so we don't run as root 
-RUN pip install -r requirements.txt
+# 2. Create directories that the bot needs that are owned by the user.
-
+#    /Uploads is used to store the uploaded files.
-# This is the stage where we will run the uvicorn server.
+#    /home/botuser/discord-embed is where the Python code is stored.
-FROM python:3.10-slim AS run-image
-
-# Copy the virtual environment to the run-image.
-COPY --from=build-image /opt/venv /opt/venv
-
-# Install ffmpeg, it is needed for finding the video resolution and
-# making the video thumbnail.
-RUN apt-get update
-RUN apt-get install -y --no-install-recommends ffmpeg
-
-# Create user so we don't run as root and make the needed directories
-# Logs are stored in /var/log/discord-embed and uploaded files,
-# thumbnails, and HTML are stored in /Uploads.
 RUN useradd --create-home botuser && \
-install --verbose --directory --mode=0755 --owner=botuser --group=botuser /var/log/discord-embed/ /Uploads
+    install --verbose --directory --mode=0775 --owner=botuser --group=botuser /Uploads /home/botuser/discord-embed
 
-# Persist the uploaded files and files we have created.
+# Change to the user we created.
-VOLUME ["/Uploads"]
-
-# Change to the user we created so we don't run as root.
 USER botuser
 
 # Change directory to where we will run the bot.
 WORKDIR /home/botuser/discord-embed
 
-# Add main.py and settings.py to the container.
+# Add needed files to the container, files and directories not needed are ignored in .dockerignore.
 ADD --chown=botuser:botuser . /home/botuser/discord-embed/
 
-# Uvicorn runs on port 5000, we can't use any ports below 1024 due to
+# 1. Install Poetry.
-# not being root.
+# 2. Add Poetry to the PATH.
-EXPOSE 5000
+# 3. Install dependencies.
+ENV PATH="/home/botuser/.local/bin/:$PATH"
+RUN curl -sSL https://install.python-poetry.org | python -
+RUN poetry install --no-interaction --no-ansi --no-dev
 
-# Make sure we use the virtualenv.
+# Persist the uploaded files and files we have created.
-ENV PATH="/opt/venv/bin:$PATH"
+VOLUME ["/Uploads"]
-
-# Don't generate byte code (.pyc-files).
-# These are only needed if we run the python-files several times.
-# Docker doesn't keep the data between runs so this adds nothing.
-ENV PYTHONDONTWRITEBYTECODE 1
-
-# Force the stdout and stderr streams to be unbuffered. This means that
-# the output will be printed immediately instead of being buffered. If
-# the Python application crashes, the output could be lost.
-ENV PYTHONUNBUFFERED 1
 
 # Run the server on all interfaces and on port 5000.
 # You should run a reverse proxy like nginx infront of this.
-CMD ["uvicorn", "discord_embed.main:app", "--host", "0.0.0.0", "--port", "5000"]
+EXPOSE 5000
+CMD ["poetry", "run", "uvicorn", "discord_embed.main:app", "--host", "0.0.0.0", "--port", "5000"]