fix: rkapp Dockerfile COPY paths match deploy build context (#21326)

## Summary

Reverts the Dockerfile changes from cc497ea which broke the remote
deploy and fixes CI

Author: ludamad

ci3/dashboard/Dockerfile

@@ -14,15 +14,14 @@ RUN apt update && apt install -y \
       && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
 WORKDIR /app
-COPY dashboard/requirements.txt requirements.txt
+COPY requirements.txt requirements.txt
 RUN pip install --no-cache-dir -r requirements.txt gunicorn
 
 # Install ci-metrics dependencies (ci-metrics runs as subprocess)
 COPY ci-metrics/requirements.txt ci-metrics/requirements.txt
 RUN pip install --no-cache-dir -r ci-metrics/requirements.txt
 
 RUN git config --global --add safe.directory /aztec-packages
-COPY dashboard/ .
-COPY ci-metrics/ ci-metrics/
+COPY . .
 EXPOSE 8080 8081
 CMD ["gunicorn", "-w", "50", "-b", "0.0.0.0:8080", "rk:app"]