Add `cargo audit` to rust

Readme.md

@@ -11,6 +11,10 @@ regular docker images and can be used anywhere.
 
 Gives you access to `rsync`, `ssh`, and `scp` commands.
 
+### rust
+
+Rust stable toolchain, with `rustup`, `fmt`, `clippy`, `llvm-tools`, and `audit`.
+
 ---
 
 ## Adding a new container

rust/Dockerfile

@@ -2,9 +2,11 @@ FROM alpine:latest
 
 LABEL org.opencontainers.image.authors="kaan@bgenc.net"
 
-RUN apk add --no-cache rustup \
+RUN apk add --no-cache rustup build-base pkgconfig openssl-dev \
   && rustup-init -y
 
 ENV PATH=/root/.cargo/bin:$PATH
 
 RUN rustup component add llvm-tools-preview
+
+RUN cargo install cargo-audit