Add a more up-to-date Containerfile in place of the old Dockerfile

Author: jessebraham

.dockerignore

@@ -0,0 +1,33 @@
+FROM debian:bullseye-slim
+
+ENV DEBIAN_FRONTEND=noninteractive
+ENV LC_ALL=C.UTF-8
+ENV LANG=C.UTF-8
+
+WORKDIR /root
+
+# Install dependencies and required tools, then clean up after ourselves.
+RUN apt-get update \
+ && apt-get install -y build-essential curl libudev-dev pkg-config xz-utils  \
+ && apt-get clean -y \
+ && rm -rf /var/lib/apt/lists/* /tmp/library-scripts
+
+# Install the stable Rust toolchain along with all targets supported by the ESP32-C3.
+RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs \
+    | sh -s -- -y --profile minimal \
+ && $HOME/.cargo/bin/rustup component add rust-src \
+ && $HOME/.cargo/bin/rustup target add \
+     riscv32i-unknown-none-elf \
+     riscv32imc-unknown-none-elf \
+     riscv32imac-unknown-none-elf
+
+# Install the fork of the Rust toolchain with Xtensa support, along with any other required build
+# tools. Additionally installs `cargo espflash` and `espflash` while we're at it.
+RUN curl -LO https://raw.githubusercontent.com/esp-rs/rust-build/main/install-rust-toolchain.sh \
+ && chmod +x install-rust-toolchain.sh \
+ && ./install-rust-toolchain.sh \
+     --extra-crates "cargo-espflash espflash" \
+     --clear-cache "YES" \
+     --export-file export-rust.sh \
+ && cat export-rust.sh >> $HOME/.bashrc \
+ && rm -rf install-rust-toolchain.sh export-rust.sh /tmp/cargo-install*