Don't run as root in Docker container #140
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JohannesRudolph
approved these changes
Apr 24, 2025
| ARG UID=1005 | ||
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| COPY --from=builder /build/build/libs/unipipe-service-broker-1.0.0.jar /app/ | ||
| COPY --chown=0:0 --chmod=555 --from=builder /build/build/libs/unipipe-service-broker-1.0.0.jar /app/ |
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can the chown command in the COPY and in the RUN instruction below be combined into the COPY instruction already?
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No not really, the idea was that the jar is owned by root and can only be executed (not modified) by other users. While the /app itself must be writeable for the unprivileged container user, which runs the jar as it writes the SSH key into the /app/tmp directory (and also creates the /app/tmp directory after #139 )
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It is considered bad practice to let applications run as root in a Docker container. Furthermore, this might even be prohibited in some environments. In order to lower the attack surface, the application is executed as an unprivileged user with this PR.