jketreno/peddlers-of-ketran
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docker: make runtime image user/group creation robust in Dockerfile.server (support HOST_UID/HOST_GID; reuse existing UID/GID; chown by numeric UID:GID; use numeric USER)

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James Ketr 2025-10-01 09:44:27 -07:00
parent 05fd770f2e
commit c64fa651a2
1 changed files with 22 additions and 0 deletions
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Dockerfile.server
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@ -14,6 +14,10 @@ RUN npm run build
## Production image
FROM node:20-alpine AS runtime
# Allow host UID/GID to be specified at build time.
ARG HOST_UID=1000
ARG HOST_GID=1000
WORKDIR /
# Copy built server
@ -21,7 +25,25 @@ COPY --from=builder /server/dist ./server/dist
COPY --from=builder /server/node_modules ./server/node_modules
COPY server/package*.json /server/
## Create hostuser in runtime image so runtime-created files have proper uid/gid
RUN if ! getent group ${HOST_GID} >/dev/null 2>&1; then \
addgroup -g ${HOST_GID} hostgroup; \
else \
echo "group for GID ${HOST_GID} already exists"; \
fi
RUN if ! getent passwd ${HOST_UID} >/dev/null 2>&1; then \
adduser -D -u ${HOST_UID} -G hostgroup hostuser; \
else \
echo "user for UID ${HOST_UID} already exists"; \
mkdir -p /home/hostuser || true; \
fi
RUN chown -R ${HOST_UID}:${HOST_GID} /server || true
WORKDIR /server
ENV NODE_ENV=production
ENV HOME=/home/hostuser
USER ${HOST_UID}:${HOST_GID}
EXPOSE 8930
CMD ["npm", "start"]