starting point of docker vue app (not working: npm wont install)

Docker/app/Dockerfile

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+FROM node:lts-alpine
+
+RUN apk update && apk --no-cache add shadow && \
+    usermod -u 1001 node && \
+    groupmod -g 1001 node
+
+RUN find / -group 1000 -exec chgrp -h node {} \;
+RUN find / -user 1000 -exec chown -h node {} \;
+
+# RUN addgroup -g 1000 gdp && \
+    # adduser -h /home/gdp -D -u 1000 gdp && \
+RUN adduser -u 1000 -G users -s /bin/sh -D offline
+    # chown -R gdp:gdp /home/gdp
+
+USER offline
+
+COPY ./bashrc /home/offline/.bashrc
+COPY ./inputrc /home/offline/.inputrc
+
+COPY ./entrypoint.sh /usr/local/bin
+USER root
+RUN chmod +x /usr/local/bin/entrypoint.sh
+USER offline
+CMD ["/bin/sh","/usr/local/bin/entrypoint.sh"]

Docker/app/bashrc

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+PS1='\e[36m\e[1mNODE\e[0m:\e[90m\w\e[0m\n$ '
+bind '"\e[A": history-search-backward'
+bind '"\e[B": history-search-forward'

Docker/app/entrypoint.sh

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+#!/bin/sh
+
+cat /etc/passwd|grep 1000
+
+echo "Npm install"
+
+cd /app
+npm install
+
+echo "Run npm dev"
+npm run dev

Docker/app/inputrc

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+set show-all-if-ambiguous on
+set completion-ignore-case on