Fix some hadolint warnings

Author: mhucka

Dockerfile

@@ -6,13 +6,15 @@ ARG CUDA_PATH
 ENV PATH="$CUDA_PATH/bin:$PATH"
 
 # Update package list & install some basic tools we'll need.
-RUN apt-get update
-RUN apt-get install -y python3-dev python3-pip python3-venv make g++ wget git
+# hadolint ignore=DL3009,DL3008
+RUN apt-get update && \
+    apt-get install -y make g++ wget git --no-install-recommends && \
+    apt-get install -y python3-dev python3-pip python3-venv --no-install-recommends
 
 # Ubuntu 24's version of CMake is 3.28. We need a newer version.
 RUN apt-get remove --purge --auto-remove cmake
-RUN wget -q https://github.com/Kitware/CMake/releases/download/v3.31.7/cmake-3.31.7-linux-x86_64.sh
-RUN sh cmake-3.31.7-linux-x86_64.sh --prefix=/usr/local --skip-license
+RUN wget -q https://github.com/Kitware/CMake/releases/download/v3.31.7/cmake-3.31.7-linux-x86_64.sh && \
+    sh cmake-3.31.7-linux-x86_64.sh --prefix=/usr/local --skip-license
 
 # Copy relevant files for simulation.
 COPY ./Makefile /qsim/Makefile
@@ -31,8 +33,9 @@ RUN python3 -m venv --upgrade-deps test_env
 ENV PATH="/test_env/bin:$PATH"
 
 # Install qsim requirements.
-RUN python3 -m pip install -r /qsim/requirements.txt
-RUN python3 -m pip install -r /qsim/dev-requirements.txt
+# hadolint ignore=DL3042
+RUN python3 -m pip install -r /qsim/requirements.txt && \
+    python3 -m pip install -r /qsim/dev-requirements.txt
 
 # Compile qsim.
 WORKDIR /qsim/

install/tests/Dockerfile

@@ -6,13 +6,15 @@ ARG CUDA_PATH
 ENV PATH="$CUDA_PATH/bin:$PATH"
 
 # Update package list & install some basic tools we'll need.
-RUN apt-get update
-RUN apt-get install -y python3-dev python3-pip python3-venv make g++ wget git
+# hadolint ignore=DL3009,DL3008
+RUN apt-get update && \
+    apt-get install -y make g++ wget git --no-install-recommends && \
+    apt-get install -y python3-dev python3-pip python3-venv --no-install-recommends
 
 # Ubuntu 24's version of CMake is 3.28. We need a newer version.
 RUN apt-get remove --purge --auto-remove cmake
-RUN wget -q https://github.com/Kitware/CMake/releases/download/v3.31.7/cmake-3.31.7-linux-x86_64.sh
-RUN sh cmake-3.31.7-linux-x86_64.sh --prefix=/usr/local --skip-license
+RUN wget -q https://github.com/Kitware/CMake/releases/download/v3.31.7/cmake-3.31.7-linux-x86_64.sh && \
+    sh cmake-3.31.7-linux-x86_64.sh --prefix=/usr/local --skip-license
 
 # Copy qsim files from the outside-Docker location to an inside-Docker location.
 COPY ./ /qsim/
@@ -29,6 +31,7 @@ ENV PATH="/qsim/test_env/bin:$PATH"
 # Install qsim from sources.
 # Note: use pip3 here, not python3 -m pip. We need to make sure to get the pip
 # installed inside the venv, because that one has the correct sys.path.
+# hadolint ignore=DL3042
 RUN pip3 install -v /qsim/
 
 # Copy the tests to a non-qsim directory.