Update Dockerfile

Dockerfile

@@ -15,15 +15,9 @@ RUN pip3 install flask flask_restful
 RUN pip3 install playwright
 RUN playwright install
 
-# Set the environment variable for GitHub token
-ARG GITHUB_TOKEN
-ENV GITHUB_TOKEN=${GITHUB_TOKEN}
-
-# Print GitHub token for verification
-RUN echo "GitHub token: ${GITHUB_TOKEN}"
-
-# Clone the repository using the GitHub token
-RUN git clone https://${GITHUB_TOKEN}@github.com/UrloMythus/Mysterious.git /app
+# Expose the secret GITHUB_TOKEN at buildtime and use its value in git clone command
+RUN --mount=type=secret,id=GITHUB_TOKEN,mode=0444,required=true \
+    git clone https://$(cat /run/secrets/GITHUB_TOKEN)@github.com/UrloMythus/Mysterious.git /app || true
 
 # Copy README.md from local (adjust path if needed)
 COPY README.md /app/README.md