chore(superchain): grant passwordless sudo to superchain user (#3758)

Instead of granting only via `sudo` group, allow the `superchain` user to passwordless sudo, in hopes this fixes the currently broken behavior in GitHub Actions.

Additionally, remove the `dockerd-entrypoint.sh` script that did not work propertly and was neither tested, nor used (to our knowledge).



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By submitting this pull request, I confirm that my contribution is made under the terms of the [Apache 2.0 license].

[Apache 2.0 license]: https://www.apache.org/licenses/LICENSE-2.0

superchain/Dockerfile

@@ -221,12 +221,12 @@ RUN pip install aws-sam-cli
 # Install some configuration
 COPY superchain/ssh_config /root/.ssh/config
 RUN chmod 600 /root/.ssh/config
-COPY superchain/dockerd-entrypoint.sh /usr/local/bin/
 
 # Create the image's non-root user, and enable no-password sudo
 RUN groupadd --gid 1001 superchain                                                                                      \
   && useradd --shell /bin/bash --comment "Docker User" --uid 1001 --gid 1001 --no-log-init --groups sudo superchain     \
   && echo "%sudo ALL = (ALL:ALL) NOPASSWD: ALL" >> /etc/sudoers.d/nopasswd                                              \
+  && echo "superchain ALL = (ALL:ALL) NOPASSWD: ALL" >> /etc/sudoers.d/nopasswd                                         \
   && chmod 0440 /etc/sudoers.d/nopasswd
 COPY --chown=superchain:superchain superchain/m2-settings.xml /home/superchain/.m2/settings.xml
 COPY --chown=superchain:superchain superchain/ssh_config /home/superchain/.ssh/config