reset dockr file changes

Dockerfile

@@ -1,10 +1,5 @@
-# use older node version for build since arm/v8 threw error when node 20 was used
-FROM node:18.19.1-alpine AS build_image
-
-# install additional tools needed if on arm64 / armv7
-RUN apk add --update python3 make g++\
-    && rm -rf /var/cache/apk/*
-
+# specify node.js image
+FROM node:22-alpine
 
 # use production node environment by default
 ENV NODE_ENV=production
@@ -23,15 +18,6 @@ RUN mkdir -p /var/lib/kutt
 # copy the rest of source files into the image
 COPY . .
 
-# switch back to node 22 for running the app
-FROM node:22-alpine
-
-# set working directory.
-WORKDIR /kutt
-
-# copy built application from build phase
-COPY --from=build_image /kutt ./
-
 # expose the port that the app listens on
 EXPOSE 3000