Dockerfile supply chain risks?

I'm seeing this in the Dockerfile:

RUN curl -fsSL https://claude.ai/install.sh | bash
RUN curl -fsSL https://fnm.vercel.app/install | bash -s -- ...
RUN sh -c "$(curl -fsSL https://github.com/deluan/zsh-in-docker/releases/download/v${ZSH_IN_DOCKER_VERSION}/zsh-i

And these:

curl -fsSL "https://github.com/dandavison/delta/releases/download/${GIT_DELTA_VERSION}/git-delta_${GIT_DELTA_VERSION}_${ARCH}.deb" -o /tmp/git-delta.deb
dpkg -i /tmp/git-delta.deb
curl -fsSL "https://github.com/junegunn/fzf/releases/download/v${FZF_VERSION}/fzf-${FZF_VERSION}-${FZF_ARCH}.tar.gz" | t

All of those seem like supply-chain risks. I would love to see this with checksum verification, if feasible. Given that you're security experts, I'm assuming I'm looking at this wrong, but I wanted to raise the issue and be sure. I am not a security expert.

Start by reviewing the Dockerfile commands that pipe curl responses to bash or download release archives and packages. Check how each dependency is currently fetched and determine whether checksum verification can be added consistently; done means the listed downloads validate trusted checksums before execution or installation.