feat(ubuntu20-04): added build files for rio

ubuntu20-04/build-rio.dockerfile

@@ -0,0 +1,23 @@
+# Rio is a terminal writted in Rust
+FROM ubuntu:20.04
+
+WORKDIR /build/rio
+
+ENV PATH="/root/.cargo/bin:${PATH}"
+ENV DEBIAN_FRONTEND=noninteractive
+
+# Install deps
+RUN apt update -y \
+  && apt upgrade -y \
+  && apt install -y git curl cmake pkg-config libfreetype6-dev libfontconfig1-dev libxcb-xfixes0-dev libxkbcommon-dev python3
+# Install Rust
+RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
+RUN rustup override set stable \
+  && rustup update stable
+# Clone repo
+RUN git clone https://github.com/raphamorim/rio.git /build/rio
+
+# Build
+RUN cargo build --release --no-default-features --features=x11
+
+CMD ["sleep", "infinity"]