Disable publishing windows images

Update the readme, bump rust to 1.56.1

Author: ghaith

.github/workflows/docker.yml

@@ -59,5 +59,7 @@ jobs:
           VERSION=$VERSION-${{ matrix.config.version }}
           echo IMAGE_ID=$IMAGE_ID
           echo VERSION=$VERSION
-          docker tag $IMAGE_NAME $IMAGE_ID:$VERSION
-          docker push $IMAGE_ID:$VERSION
+          if ["$RUNNER_OS" == 'Linux']; then
+            docker tag $IMAGE_NAME $IMAGE_ID:$VERSION
+            docker push $IMAGE_ID:$VERSION
+          fi

README.md

@@ -2,3 +2,27 @@
 Docker images for Rust and LLVM
 
 Allows building Rust applications with the LLVM dependencies on both Windows and Linux
+
+For windows the images have to build locally after accepting the [Visual Studio license](https://go.microsoft.com/fwlink/?LinkId=2086102)
+
+## Building the image
+Build the image using 
+- Linux or WSL 2 __(Recommended)__: 
+	`docker build linux/Dockerfile -t rust-llvm`
+
+- Windows containers :
+	`docker build windows/Dockerfile -t rust-llvm`
+
+## Usage
+
+### Direct usage 
+Pull the image using 
+`docker pull ghcr.io/plc-lang/rust-llvm:latest-linux`
+
+Run with
+`docker run -it -v $PWD:/build ghcr.io/plc-lang/rust-llvm:latest-linux`
+
+### Importing
+
+You can import the image into another Dockerfile using
+`FROM ghcr.io/plc-lang/rust-llvm:latest-linux`

linux/Dockerfile

@@ -1,5 +1,7 @@
 FROM rust:1.56.1-bullseye
 
+# Fixed rust version to 1.56
+ARG RUST_VER=1.56.1
 # Fixed rust version to 12
 ARG LLVM_VER=12
 
@@ -26,7 +28,6 @@ RUN rustup toolchain install nightly \
 	 	#Install documentation and coverage tools \
 		&& cargo install mdbook grcov
 
-
 WORKDIR /build
 ENTRYPOINT ["bash"]