Add Rust CI container

.circleci/config.yml

@@ -41,3 +41,7 @@ workflows:
       - build-and-deploy-image:
           name: firefox-build-and-deploy
           imageName: firefox
+
+      - build-and-deploy-image:
+          name: rust-build-and-deploy
+          imageName: rust

rust/Dockerfile

@@ -0,0 +1,21 @@
+# latest stable Rust 1.x
+FROM rust:1-stretch
+
+LABEL maintainer="Michael Cooper <mcooper@mozilla.com>"
+
+# cargo-kcov needs kcov >= 30. Debian Stretch has kcov 11, so these steps build
+# kcov directly.
+RUN apt-get update && \
+    apt-get upgrade -y && \
+    apt-get install -y cmake g++ pkg-config jq libcurl4-openssl-dev libelf-dev libdw-dev binutils-dev libiberty-dev
+RUN cargo install cargo-kcov
+RUN mkdir -p /tmp/kcov && \
+    cd /tmp/kcov && \
+    cargo kcov --print-install-kcov-sh | sh
+
+RUN rustup component add rustfmt && \
+    rustup component add clippy
+
+# Cleanup
+RUN apt-get clean && \
+    rm -rf /tmp/kcov