[docker] add dockerfile for qt-av-deps image

[fabiencastan]

Dockerfile for building an image containing Qt and avdeps (AliceVision dependencies only). This image is required to set up the CI pipeline for QtAliceVision.

[gemini-code-assist]

Code Review

This pull request adds a Dockerfile and a helper script to build a Rocky Linux image with Qt via aqtinstall, as well as minor updates to the .gitignore file. The review feedback highlights several improvement opportunities: passing all defined version variables as build arguments to avoid mismatches, making the build script directory-independent, explicitly installing dnf-plugins-core, using the --no-cache-dir flag with pip to reduce image size, and combining sequential RUN commands to minimize Docker layers.

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[gemini-code-assist]

The script defines AVDEPS_VERSION, ROCKY_VERSION, and CUDA_VERSION and uses them to construct the DOCKER_TAG. However, these variables are not passed as --build-arg to the docker build command. As a result, the build will use the default values hardcoded in the Dockerfile_rocky, which can lead to a mismatch between the actual image contents and the generated tag if these variables are modified in this script.

Suggested change

	docker build \
	--rm \
	--progress=plain \
	--build-arg "QT_VERSION=${QT_VERSION}" \
	--tag "${DOCKER_TAG}" \
	-f Dockerfile_rocky .
	docker build \
	--rm \
	--progress=plain \
	--build-arg "AVDEPS_VERSION=${AVDEPS_VERSION}" \
	--build-arg "ROCKY_VERSION=${ROCKY_VERSION}" \
	--build-arg "CUDA_VERSION=${CUDA_VERSION}" \
	--build-arg "QT_VERSION=${QT_VERSION}" \
	--tag "${DOCKER_TAG}" \
	-f Dockerfile_rocky .

[gemini-code-assist]

To make the script robust and executable from any directory (e.g., the repository root), it is recommended to change the working directory to the script's directory at the beginning of the script.

Suggested change

	#!/bin/bash
	set -ex
	#!/bin/bash
	set -ex
	# Ensure the script runs from its own directory
	cd "$(dirname "$0")"

[gemini-code-assist]

The dnf config-manager command requires dnf-plugins-core to be installed. If it is not pre-installed in the base image, this step will fail. It is safer to explicitly install dnf-plugins-core before running dnf config-manager.

RUN dnf -y install epel-release dnf-plugins-core && \
    dnf config-manager --set-enabled crb && \

[gemini-code-assist]

When installing Python packages via pip in a Dockerfile, it is best practice to use the --no-cache-dir flag to prevent caching package files, which unnecessarily increases the Docker image size.

RUN pip3 install --no-cache-dir --upgrade pip && \
    pip3 install --no-cache-dir aqtinstall

[gemini-code-assist]

Multiple sequential RUN instructions are used for smoke testing. Each RUN instruction creates a new layer in the Docker image. Combining these read-only commands into a single RUN instruction reduces the number of layers and keeps the image cleaner.

RUN ls -l ${QT_ROOT}/lib && \
    find ${QT_DIR} -name "libQt6*.so*" && \
    echo "LD_LIBRARY_PATH: ${LD_LIBRARY_PATH}" && \
    ldd ${QT_ROOT}/bin/qmake && \
    qmake --version && \
    cmake --version