Rust support (#31)

* rust support

* added test

* readme

Author: vibhorgupta-gh

README.md

@@ -29,3 +29,4 @@ Currently we have following images -
  - [py2](containers/py2)
  - [py3](containers/py3)
  - [ruby](containers/ruby)
+ - [rust](containers/rust)

containers/rust/Dockerfile

@@ -0,0 +1,9 @@
+FROM alpine:3.6
+
+RUN apk add --no-cache musl-dev bash rust="1.17.0-r2"
+
+COPY ./compile.sh /bin/compile.sh
+COPY ./run.sh /bin/run.sh
+
+RUN chmod 777 /bin/compile.sh; \
+    chmod 777 /bin/run.sh

containers/rust/compile.sh

@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+
+rustc script.rs 2> compile.stderr 1> compile.stdout

containers/rust/run.sh

@@ -0,0 +1,4 @@
+#!/usr/bin/env bash
+
+chmod 777 script.rs
+./script < run.stdin 1> run.stdout 2> run.stderr

test.sh

@@ -39,3 +39,7 @@
 @test "test ruby" {
   bash tests/ruby/test_worker.sh
 }
+
+@test "test rust" {
+  bash tests/rust/test_worker.sh
+}

tests/rust/run.stdin

@@ -0,0 +1 @@
+World

tests/rust/script.rs

@@ -0,0 +1,11 @@
+use std::io;
+
+fn main() {
+    let mut input = String::new();
+
+    io::stdin().read_line(&mut input)
+        .ok()
+        .expect("Couldn't read line");
+
+    println!("Hello {}", input);
+}

tests/rust/test_worker.sh

@@ -0,0 +1,41 @@
+#!/usr/bin/env bash
+pushd $(dirname "$0")
+DIR=$(pwd)
+RUNBOX="${DIR}/runbox"
+
+echo $RUNBOX
+# Remove RUNBOX
+rm -rf $RUNBOX
+
+# Create runbox
+mkdir -p $RUNBOX
+
+# Copy source to runbox
+cp $DIR/script.rs $RUNBOX/script.rs
+cp $DIR/run.stdin $RUNBOX/run.stdin
+
+# Test Compile
+docker run \
+    --cpus="1" \
+    --memory="100m" \
+    --ulimit nofile=64:64 \
+    --rm \
+    --read-only \
+    -v "$RUNBOX":/usr/src/runbox \
+    -v "$RUNBOX":/tmp \
+    -w /usr/src/runbox codingblocks/judge-worker-rust \
+    bash -c "/bin/compile.sh && /bin/run.sh"
+
+ls -lh ${RUNBOX}
+
+expected="Hello World"
+actual="$(cat ${RUNBOX}/run.stdout)"
+if [ "$expected" == "$actual" ] ;then
+    :
+else
+    echo "MISMATCH: Expected = $expected; Actual = $actual"
+    exit 1
+fi
+
+# Delete runbox
+rm -rf $RUNBOX