First version of the GitHub Action

.dockerignore

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+.git
+.github

Dockerfile

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+FROM rust:1.35.0-slim
+
+LABEL name="rust-musl-builder"
+LABEL version="1.0.0"
+LABEL repository="https://github.com/juankaram/rust-musl-action"
+LABEL homepage="https://github.com/juankaram/rust-musl-action"
+LABEL maintainer="Juan Karam"
+
+LABEL com.github.actions.name="Rust MUSL Builder"
+LABEL com.github.actions.description="Provides a Rust MUSL environment"
+LABEL com.github.actions.icon="settings"
+LABEL com.github.actions.color="orange"
+
+RUN apt-get update && apt-get install -y zip build-essential musl-tools pkg-config libssl-dev
+
+ENV BUILD_DIR=/build \
+    OUTPUT_DIR=/output \
+    RUST_BACKTRACE=1 \
+    RUSTUP_HOME=/usr/local/rustup \
+    CARGO_HOME=/usr/local/cargo \
+    PATH=/usr/local/cargo/bin:$PATH \
+    PREFIX=/toolchain \
+    MUSL_VERSION=1.1.22 \
+    OPENSSL_VERSION=1.1.0k \
+    BUILD_TARGET=x86_64-unknown-linux-musl
+
+RUN mkdir -p /usr/local/cargo/bin \
+    && mkdir -p $BUILD_DIR \
+    && mkdir -p $OUTPUT_DIR \
+    && mkdir -p $PREFIX
+
+WORKDIR $PREFIX
+
+ADD http://www.musl-libc.org/releases/musl-$MUSL_VERSION.tar.gz .
+RUN tar -xvzf musl-$MUSL_VERSION.tar.gz \
+    && cd musl-$MUSL_VERSION \
+    && ./configure --prefix=$PREFIX \
+    && make install \
+    && cd ..
+
+ENV CC=$PREFIX/bin/musl-gcc \
+    C_INCLUDE_PATH=$PREFIX/include/ \
+    CPPFLAGS=-I$PREFIX/include \
+    LDFLAGS=-L$PREFIX/lib
+
+ADD https://www.openssl.org/source/openssl-$OPENSSL_VERSION.tar.gz .
+
+RUN echo "Building OpenSSL" \
+    && tar -xzf "openssl-$OPENSSL_VERSION.tar.gz" \
+    && cd openssl-$OPENSSL_VERSION \
+    && ./Configure no-async no-afalgeng no-shared no-zlib -fPIC --prefix=$PREFIX --openssldir=$PREFIX/ssl linux-x86_64 \
+    && make depend \
+    && make install
+
+ENV OPENSSL_DIR=$PREFIX \
+    OPENSSL_STATIC=true
+
+WORKDIR $BUILD_DIR
+
+RUN rustup self update && rustup update
+RUN rustup target add $BUILD_TARGET
+RUN rustup component add clippy-preview
+RUN rustup component add rustfmt-preview
+RUN cargo install cargo-release
+
+COPY entrypoint.sh /entrypoint.sh
+ENTRYPOINT ["/entrypoint.sh"]

LICENSE

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+
+The MIT License (MIT)
+
+Copyright (c) 2018 Juan Karam, GitHub, Inc. and contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+

README.md

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+# GitHub Action for Rust and MUSL
+
+Action provides an environment with Rust, MUSL and x86_64-unknown-linux-musl target.
+
+## Usage
+
+To compile a rust binary/library with x86_64-unknown-linux-musl target:
+
+```hcl
+action "build" {
+  env = {
+      BUILD_TARGET = "x86_64-unknown-linux-musl"
+  }
+  uses = "juankaram/rust-musl-action@master"
+  args = "cargo build --target $BUILD_TARGET --release"
+}
+```
+
+## Attribution
+
+Heavily inspired by [GitHub Actions](https://github.com/actions), [Rust Action](https://github.com/icepuma/rust-action) and [David Lewis Work](https://github.com/davidarmstronglewis).
+
+## License
+
+The Dockerfile and associated scripts and documentation in this project are released under the [MIT License](LICENSE).
+

entrypoint.sh

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+#!/bin/bash
+set -e -u -o pipefail
+cd $GITHUB_WORKSPACE
+bash -c "$*"