add sp1 installer

docker/sp1/Dockerfile

@@ -0,0 +1,38 @@
+ARG BASE_IMAGE_TAG=latest
+FROM ere-base:${BASE_IMAGE_TAG}
+
+ARG USERNAME=ere_user
+
+# Ensure Cargo/Rustup environment variables are set from the base image for SDK script
+# TODO: These should be inherited from ere-base.
+ENV RUSTUP_HOME=${RUSTUP_HOME:-/usr/local/rustup} \
+    CARGO_HOME=${CARGO_HOME:-/usr/local/cargo} \
+    PATH=${PATH:-/usr/local/cargo/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin}
+
+# Copy the SP1 SDK installer script
+COPY scripts/sdk_installers/install_sp1_sdk.sh /tmp/install_sp1_sdk.sh
+RUN chmod +x /tmp/install_sp1_sdk.sh
+
+# TODO: Check the sp1up script to see if most of the below path configs are needed
+# Define where SP1 SDK will be installed within the image.
+# The install_sp1_sdk.sh script will respect these ENV variables.
+# ${HOME} will resolve to the current user's home (e.g., /root when this stage runs as root).
+ENV SP1UP_HOME="${HOME}/.sp1up" \
+    SP1_HOME="${HOME}/.sp1"
+
+# Run the SP1 SDK installation script
+# It will use the SP1UP_HOME and SP1_HOME defined above.
+RUN /tmp/install_sp1_sdk.sh && rm /tmp/install_sp1_sdk.sh # Clean up script
+
+# Update the image's persistent PATH to include SP1 binaries.
+# This uses the SP1UP_HOME and SP1_HOME defined above.
+ENV PATH="${SP1UP_HOME}/bin:${SP1_HOME}/bin:$PATH"
+
+# Verify SP1 installation (optional here, as script does it, but good for sanity)
+RUN cargo prove --version
+RUN rustup toolchain list | grep succinct || (echo "SP1 Toolchain (succinct) not found after script execution!" && exit 1)
+
+CMD ["/bin/bash"] 
+
+# TODO:  Maybe we use root to install it in ere_user and then switch back to ere_user for security
+# USER ${USERNAME} # Switch to non-root user again