refactor(container): reduce layers and image size

- Combines the RUN commands to reduce image layers where possible.
- Clean apt/dnf package cache and remove downloaded package files.

Author: jorge-ortega

container/rockylinux9-cuda12/Dockerfile

@@ -7,39 +7,38 @@ RUN dnf -y install \
     redhat-rpm-config \
     which \
     xz \
-    zlib-devel
-
+    zlib-devel \
 # Needed to build `path_tracer`, `optix/ex03_window` example
-RUN dnf -y install \
     cmake \
     fontconfig-devel \
     libX11-devel  \
     libXcursor-devel \
     libXi-devel \
-    libXrandr-devel
+    libXrandr-devel && \
+    dnf clean all
 
 # Get LLVM 7 & libffi.so.6
 WORKDIR /data/llvm7
-RUN curl -sSf -L -O https://dl.fedoraproject.org/pub/epel/9/Everything/x86_64/Packages/l/libffi3.1-3.1-36.el9.x86_64.rpm
-RUN curl -sSf -L -O https://dl.fedoraproject.org/pub/epel/8/Everything/x86_64/Packages/l/llvm7.0-7.0.1-7.el8.x86_64.rpm
-RUN curl -sSf -L -O https://dl.fedoraproject.org/pub/epel/8/Everything/x86_64/Packages/l/llvm7.0-devel-7.0.1-7.el8.x86_64.rpm
-RUN curl -sSf -L -O https://dl.fedoraproject.org/pub/epel/8/Everything/x86_64/Packages/l/llvm7.0-libs-7.0.1-7.el8.x86_64.rpm
-RUN curl -sSf -L -O https://dl.fedoraproject.org/pub/epel/8/Everything/x86_64/Packages/l/llvm7.0-static-7.0.1-7.el8.x86_64.rpm
-RUN dnf -y install ./*.rpm
-RUN ln -s /usr/bin/llvm-config-7-64 /usr/bin/llvm-config
+RUN curl -sSf -L -O https://dl.fedoraproject.org/pub/epel/9/Everything/x86_64/Packages/l/libffi3.1-3.1-36.el9.x86_64.rpm && \
+    curl -sSf -L -O https://dl.fedoraproject.org/pub/epel/8/Everything/x86_64/Packages/l/llvm7.0-7.0.1-7.el8.x86_64.rpm && \
+    curl -sSf -L -O https://dl.fedoraproject.org/pub/epel/8/Everything/x86_64/Packages/l/llvm7.0-devel-7.0.1-7.el8.x86_64.rpm && \
+    curl -sSf -L -O https://dl.fedoraproject.org/pub/epel/8/Everything/x86_64/Packages/l/llvm7.0-libs-7.0.1-7.el8.x86_64.rpm && \
+    curl -sSf -L -O https://dl.fedoraproject.org/pub/epel/8/Everything/x86_64/Packages/l/llvm7.0-static-7.0.1-7.el8.x86_64.rpm && \
+    dnf -y install ./*.rpm && \
+    ln -s /usr/bin/llvm-config-7-64 /usr/bin/llvm-config && \
+    rm -rf ./*.rpm && \
+    dnf clean all
 
 # Get Rust
 RUN curl -sSf -L https://sh.rustup.rs | bash -s -- -y
 ENV PATH="/root/.cargo/bin:${PATH}"
 
 # Setup the workspace
-ADD ./rust-toolchain.toml /data/Rust-CUDA/
+COPY ./rust-toolchain.toml /data/Rust-CUDA/
 WORKDIR /data/Rust-CUDA
-RUN rustup show
-RUN rm -f "rust-toolchain.toml"
+RUN rustup show && rm -f "rust-toolchain.toml"
 
 # Add nvvm to LD_LIBRARY_PATH.
 ENV LD_LIBRARY_PATH="/usr/local/cuda/nvvm/lib64:${LD_LIBRARY_PATH}"
-
 ENV LLVM_LINK_STATIC=1
 ENV RUST_LOG=info

container/ubuntu22-cuda11/Dockerfile

@@ -1,47 +1,45 @@
 FROM nvidia/cuda:11.8.0-cudnn8-devel-ubuntu22.04
 
-RUN apt-get update
-RUN DEBIAN_FRONTEND=noninteractive apt-get -qq -y install \
+RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get -qq -y install \
     build-essential \
     curl \
     clang \
     libssl-dev \
     libtinfo-dev \
     pkg-config \
     xz-utils \
-    zlib1g-dev
-
+    zlib1g-dev \
 # Needed to build `path_tracer`, `optix/ex03_window` example
-RUN DEBIAN_FRONTEND=noninteractive apt-get -qq -y install \
     cmake \
     libfontconfig-dev \
     libx11-xcb-dev \
     libxcursor-dev \
     libxi-dev \
     libxinerama-dev \
-    libxrandr-dev
+    libxrandr-dev && \
+    rm -rf /var/lib/apt/lists/*
 
 # Get LLVM 7
 WORKDIR /data/llvm7
-RUN curl -sSf -L -O http://mirrors.kernel.org/ubuntu/pool/universe/l/llvm-toolchain-7/llvm-7_7.0.1-12_amd64.deb
-RUN curl -sSf -L -O http://mirrors.kernel.org/ubuntu/pool/universe/l/llvm-toolchain-7/llvm-7-dev_7.0.1-12_amd64.deb
-RUN curl -sSf -L -O http://mirrors.kernel.org/ubuntu/pool/universe/l/llvm-toolchain-7/libllvm7_7.0.1-12_amd64.deb
-RUN curl -sSf -L -O http://mirrors.kernel.org/ubuntu/pool/universe/l/llvm-toolchain-7/llvm-7-runtime_7.0.1-12_amd64.deb
-RUN apt-get install -y ./*.deb
-RUN ln -s /usr/bin/llvm-config-7 /usr/bin/llvm-config
+RUN curl -sSf -L -O http://mirrors.kernel.org/ubuntu/pool/universe/l/llvm-toolchain-7/llvm-7_7.0.1-12_amd64.deb && \
+    curl -sSf -L -O http://mirrors.kernel.org/ubuntu/pool/universe/l/llvm-toolchain-7/llvm-7-dev_7.0.1-12_amd64.deb && \
+    curl -sSf -L -O http://mirrors.kernel.org/ubuntu/pool/universe/l/llvm-toolchain-7/libllvm7_7.0.1-12_amd64.deb && \
+    curl -sSf -L -O http://mirrors.kernel.org/ubuntu/pool/universe/l/llvm-toolchain-7/llvm-7-runtime_7.0.1-12_amd64.deb && \
+    apt-get install -y ./*.deb && \
+    ln -s /usr/bin/llvm-config-7 /usr/bin/llvm-config && \
+    rm -rf ./*.deb && \
+    rm -rf /var/lib/apt/lists/*
 
 # Get Rust
 RUN curl -sSf -L https://sh.rustup.rs | bash -s -- -y
 ENV PATH="/root/.cargo/bin:${PATH}"
 
 # Setup the workspace
-ADD ./rust-toolchain.toml /data/Rust-CUDA/
+COPY ./rust-toolchain.toml /data/Rust-CUDA/
 WORKDIR /data/Rust-CUDA
-RUN rustup show
-RUN rm -f "rust-toolchain.toml"
+RUN rustup show && rm -f "rust-toolchain.toml"
 
 # Add nvvm to LD_LIBRARY_PATH.
 ENV LD_LIBRARY_PATH="/usr/local/cuda/nvvm/lib64:${LD_LIBRARY_PATH}"
-
 ENV LLVM_LINK_STATIC=1
 ENV RUST_LOG=info

container/ubuntu22-cuda12/Dockerfile

@@ -1,47 +1,45 @@
 FROM nvidia/cuda:12.8.1-cudnn-devel-ubuntu22.04
 
-RUN apt-get update
-RUN DEBIAN_FRONTEND=noninteractive apt-get -qq -y install \
+RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get -qq -y install \
     build-essential \
     curl \
     clang \
     libssl-dev \
     libtinfo-dev \
     pkg-config \
     xz-utils \
-    zlib1g-dev
-
+    zlib1g-dev \
 # Needed to build `path_tracer`, `optix/ex03_window` example
-RUN DEBIAN_FRONTEND=noninteractive apt-get -qq -y install \
     cmake \
     libfontconfig-dev \
     libx11-xcb-dev \
     libxcursor-dev \
     libxi-dev \
     libxinerama-dev \
-    libxrandr-dev
+    libxrandr-dev && \
+    rm -rf /var/lib/apt/lists/*
 
 # Get LLVM 7
 WORKDIR /data/llvm7
-RUN curl -sSf -L -O http://mirrors.kernel.org/ubuntu/pool/universe/l/llvm-toolchain-7/llvm-7_7.0.1-12_amd64.deb
-RUN curl -sSf -L -O http://mirrors.kernel.org/ubuntu/pool/universe/l/llvm-toolchain-7/llvm-7-dev_7.0.1-12_amd64.deb
-RUN curl -sSf -L -O http://mirrors.kernel.org/ubuntu/pool/universe/l/llvm-toolchain-7/libllvm7_7.0.1-12_amd64.deb
-RUN curl -sSf -L -O http://mirrors.kernel.org/ubuntu/pool/universe/l/llvm-toolchain-7/llvm-7-runtime_7.0.1-12_amd64.deb
-RUN apt-get install -y ./*.deb
-RUN ln -s /usr/bin/llvm-config-7 /usr/bin/llvm-config
+RUN curl -sSf -L -O http://mirrors.kernel.org/ubuntu/pool/universe/l/llvm-toolchain-7/llvm-7_7.0.1-12_amd64.deb && \
+    curl -sSf -L -O http://mirrors.kernel.org/ubuntu/pool/universe/l/llvm-toolchain-7/llvm-7-dev_7.0.1-12_amd64.deb && \
+    curl -sSf -L -O http://mirrors.kernel.org/ubuntu/pool/universe/l/llvm-toolchain-7/libllvm7_7.0.1-12_amd64.deb && \
+    curl -sSf -L -O http://mirrors.kernel.org/ubuntu/pool/universe/l/llvm-toolchain-7/llvm-7-runtime_7.0.1-12_amd64.deb && \
+    apt-get install -y ./*.deb && \
+    ln -s /usr/bin/llvm-config-7 /usr/bin/llvm-config && \
+    rm -rf ./*.deb && \
+    rm -rf /var/lib/apt/lists/*
 
 # Get Rust
 RUN curl -sSf -L https://sh.rustup.rs | bash -s -- -y
 ENV PATH="/root/.cargo/bin:${PATH}"
 
 # Setup the workspace
-ADD ./rust-toolchain.toml /data/Rust-CUDA/
+COPY ./rust-toolchain.toml /data/Rust-CUDA/
 WORKDIR /data/Rust-CUDA
-RUN rustup show
-RUN rm -f "rust-toolchain.toml"
+RUN rustup show && rm -f "rust-toolchain.toml"
 
 # Add nvvm to LD_LIBRARY_PATH.
 ENV LD_LIBRARY_PATH="/usr/local/cuda/nvvm/lib64:${LD_LIBRARY_PATH}"
-
 ENV LLVM_LINK_STATIC=1
 ENV RUST_LOG=info

container/ubuntu24-cuda12/Dockerfile

@@ -1,48 +1,45 @@
 FROM nvidia/cuda:12.8.1-cudnn-devel-ubuntu24.04
 
-RUN apt-get update
-RUN DEBIAN_FRONTEND=noninteractive apt-get -qq -y install \
+RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get -qq -y install \
     build-essential \
     clang \
     curl \
     libssl-dev \
     libtinfo-dev \
     pkg-config \
     xz-utils \
-    zlib1g-dev
-
+    zlib1g-dev \
 # Needed to build `path_tracer`, `optix/ex03_window` example
-RUN DEBIAN_FRONTEND=noninteractive apt-get -qq -y install \
     cmake \
     libfontconfig-dev \
     libx11-xcb-dev \
     libxcursor-dev \
     libxi-dev \
     libxinerama-dev \
-    libxrandr-dev
+    libxrandr-dev && \
+    rm -rf /var/lib/apt/lists/*
 
-# Get LLVM 7 & libffi7
 WORKDIR /data/llvm7
-RUN curl -sSf -L -O http://security.ubuntu.com/ubuntu/pool/universe/libf/libffi7/libffi7_3.3-5ubuntu1_amd64.deb
-RUN curl -sSf -L -O http://mirrors.kernel.org/ubuntu/pool/universe/l/llvm-toolchain-7/llvm-7_7.0.1-12_amd64.deb
-RUN curl -sSf -L -O http://mirrors.kernel.org/ubuntu/pool/universe/l/llvm-toolchain-7/llvm-7-dev_7.0.1-12_amd64.deb
-RUN curl -sSf -L -O http://mirrors.kernel.org/ubuntu/pool/universe/l/llvm-toolchain-7/libllvm7_7.0.1-12_amd64.deb
-RUN curl -sSf -L -O http://mirrors.kernel.org/ubuntu/pool/universe/l/llvm-toolchain-7/llvm-7-runtime_7.0.1-12_amd64.deb
-RUN apt-get install -y ./*.deb
-RUN ln -s /usr/bin/llvm-config-7 /usr/bin/llvm-config
+RUN curl -sSf -L -O http://security.ubuntu.com/ubuntu/pool/universe/libf/libffi7/libffi7_3.3-5ubuntu1_amd64.deb && \
+    curl -sSf -L -O http://mirrors.kernel.org/ubuntu/pool/universe/l/llvm-toolchain-7/llvm-7_7.0.1-12_amd64.deb && \
+    curl -sSf -L -O http://mirrors.kernel.org/ubuntu/pool/universe/l/llvm-toolchain-7/llvm-7-dev_7.0.1-12_amd64.deb && \
+    curl -sSf -L -O http://mirrors.kernel.org/ubuntu/pool/universe/l/llvm-toolchain-7/libllvm7_7.0.1-12_amd64.deb && \
+    curl -sSf -L -O http://mirrors.kernel.org/ubuntu/pool/universe/l/llvm-toolchain-7/llvm-7-runtime_7.0.1-12_amd64.deb && \
+    apt-get install -y ./*.deb && \
+    ln -s /usr/bin/llvm-config-7 /usr/bin/llvm-config && \
+    rm -rf ./*.deb && \
+    rm -rf /var/lib/apt/lists/*
 
 # Get Rust
 RUN curl -sSf -L https://sh.rustup.rs | bash -s -- -y
 ENV PATH="/root/.cargo/bin:${PATH}"
 
 # Setup the workspace
-ADD ./rust-toolchain.toml /data/Rust-CUDA/
+COPY ./rust-toolchain.toml ./
 WORKDIR /data/Rust-CUDA
-RUN rustup show
-RUN rm -f "rust-toolchain.toml"
+RUN rustup show && rm -f "rust-toolchain.toml"
 
 # Add nvvm to LD_LIBRARY_PATH.
 ENV LD_LIBRARY_PATH="/usr/local/cuda/nvvm/lib64:${LD_LIBRARY_PATH}"
-
 ENV LLVM_LINK_STATIC=1
 ENV RUST_LOG=info