Fix Dockerfile

I had previously broken the Dockerfile when porting the project to TypeScript, then a PR I merged didn't quite fix the problem.

Dockerfile

@@ -2,23 +2,22 @@ FROM node:20-alpine
 
 RUN apk --no-cache add curl
 
-ENV NODE_ENV production
-ENV PORT 80
-ENV DB_EXPOSE_PORT 8080
-ENV DB_PREFIX /data/dbs/
-ENV DB_LOG_FILE /dev/null
+ENV PORT=80
+ENV DB_EXPOSE_PORT=8080
+ENV DB_PREFIX=/data/dbs/
+ENV DB_LOG_FILE=/dev/null
 
-ENV SECRET_DIRNAME /data
+ENV SECRET_DIRNAME=/data
 
 WORKDIR /usr/src/app
 
 COPY . .
-RUN npm install --production --silent && \
-    npm install -g typescript \
+RUN npm install --silent && \
     npm run build && \
-    mkdir -p /data/dbs 
+    rm -rf node_modules && \
+    npm install --production --silent && \
+    mkdir -p /data/dbs
 
 EXPOSE 80
 
-CMD ./Dockerstart.sh
-
+CMD ["./Dockerstart.sh"]