Update Dockerfile

Dockerfile

@@ -1,22 +1,20 @@
-# Starting Image
-
-# Node Ver.18 Alpine
+# Start from Node.js 18 Alpine
 FROM node:18-alpine
 
-# Default PS! Server Port
+# Default port for Pokemon Showdown
 EXPOSE 8000
 
-# Container Entrypoint
+# Set up working directory
 WORKDIR /app
 
 # Install Git
 RUN apk add --no-cache git
 
-# Create a git repository
-RUN ["git", "init", "."]
-
-# Set the remote repository to the showdown repository
-RUN ["git", "remote", "add", "origin", "https://www.github.com/smogon/pokemon-showdown.git"]
+# Initialize git repository and set remote
+RUN git init .
+RUN git remote add origin https://www.github.com/smogon/pokemon-showdown.git
 
-# (Entry Point) Update the server repository and start the server
-ENTRYPOINT ["git" "pull" "origin" "master" "&&" "node", "pokemon-showdown"]
+# Use a shell entrypoint to chain multiple commands:
+#  1) Pull latest code
+#  2) Launch showdown server
+ENTRYPOINT ["/bin/sh", "-c", "git pull origin master && node pokemon-showdown start"]