Update Dockerfile

Dockerfile

@@ -2,6 +2,8 @@ FROM python:3.11
 
 RUN apt-get update
 
+RUN apt-get --yes install graphviz
+
 # Set up a new user named "user" with user ID 1000
 RUN useradd -m -u 1000 user
 
@@ -12,12 +14,8 @@ USER user
 ENV HOME=/home/user \
 	PATH=/home/user/.local/bin:$PATH
 
-COPY --chown=user packages.txt .
-
 COPY --chown=user requirements.txt .
 
-RUN xargs -a packages.txt apt-get --yes install
-
 RUN pip install --no-cache-dir --upgrade pip
 
 RUN pip install --no-cache-dir --upgrade -r requirements.txt