Mambaforge already has mamba installed, so this was unnecessary. In addition,...

Mambaforge already has mamba installed, so this was unnecessary. In addition, it was causing builds to fail due to an incompatibility between mamba & conda versions. Related ticket: https://github.com/mamba-org/mamba/issues/1706

buildbucket/Dockerfile

@@ -18,5 +18,4 @@ RUN curl -L -O "https://github.com/conda-forge/miniforge/releases/latest/downloa
     echo ". $HOME/miniforge/etc/profile.d/conda.sh" >> ~/.bashrc && \
     echo "conda activate base" >> ~/.bashrc
 
-RUN /bin/bash -c "$HOME/miniforge/bin/conda install mamba -n base -c conda-forge"
 RUN /bin/bash -c "$HOME/miniforge/bin/mamba env create -n build -f buildbucket_environment.yaml"