A few optimizations

- Reduce Docker image size
- Migrate requirements.txt to Pipfile
- Remove unused dependencies
- Add a few unnecessary files in .dockerignore

Author: raidensakura

.dockerignore

@@ -142,9 +142,7 @@ test.py
 .gitignore
 .github/
 app.json
-CHANGELOG.md
 Procfile
 pyproject.toml
-README.md
-Pipfile
-Pipfile.lock
+*.md
+.*.json

Dockerfile

@@ -1,16 +1,33 @@
-FROM python:3.10 as py
+FROM python:3.10-alpine as base
 
-FROM py as build
+RUN apk add wget git cairo-dev cairo cairo-tools \
+	# pillow dependencies
+    jpeg-dev zlib-dev freetype-dev lcms2-dev openjpeg-dev tiff-dev tk-dev tcl-dev
 
-RUN apt update && apt install -y g++ git
-COPY requirements.txt /
-RUN pip install --prefix=/inst -U -r /requirements.txt
+FROM base AS python-deps
 
-FROM py
+# Install pipenv and compilation dependencies
+RUN apk update && apk add --virtual build-dependencies build-base gcc libffi-dev
+RUN pip install pipenv
 
+# Install python dependencies in /.venv
+COPY Pipfile Pipfile.lock .
+RUN PIPENV_VENV_IN_PROJECT=1 pipenv install --deploy
+
+FROM base AS runtime
+
+# Copy virtual env from python-deps stage
+COPY --from=python-deps /.venv /.venv
+ENV PATH="/.venv/bin:$PATH"
+
+# Create and switch to a new user
+RUN adduser -D modmail
+WORKDIR /home/modmail
+USER modmail
+
+# Install application into container
 ENV USING_DOCKER yes
-COPY --from=build /inst /usr/local
+COPY . .
 
-WORKDIR /modmailbot
-CMD ["python", "bot.py"]
-COPY . /modmailbot
+# Run the application
+CMD ["python", "-m", "bot"]

Pipfile

@@ -12,7 +12,6 @@ typing-extensions = "==4.2.0"
 [packages]
 aiohttp = "==3.8.1"
 colorama = "~=0.4.5"
-"discord.py" = "==2.0.1"
 emoji = "==1.7.0"
 isodate = "~=0.6.0"
 motor = "==2.5.1"
@@ -24,6 +23,12 @@ python-dotenv = "==0.20.0"
 uvloop = {version = ">=0.15.2", markers = "sys_platform != 'win32'"}
 lottie = {version = "==0.6.11", extras = ["pdf"]}
 requests = "==2.28.1"
+attrs = "==21.4.0"
+cairocffi = "==1.3.0"
+cairosvg = "==2.7.0"
+cffi = "==1.15.0"     
+pillow = "==9.5.0"
+"discord.py" = "==2.0.1"
 
 [scripts]
 bot = "python bot.py"