remove node cache in the final docker image (~/.npm/_cacache/ folder)

Signed-off-by: caioau <[email protected]>

Dockerfile

@@ -6,8 +6,9 @@ RUN apk add -U --no-cache wireguard-tools dumb-init
 # Copy Web UI
 COPY src/ /app/
 WORKDIR /app
-RUN npm ci --production
+RUN npm ci --production \
-RUN npm i -g nodemon
+&&  npm i -g nodemon \
+&&  npm cache clear --force
 RUN mv /app/node_modules/ /node_modules/
 
 # Expose Ports