Permission denied when trying to install asdf plugin on docker (github codespace)

I have some script on a dockerfile that is aimed at installing the asdf's plugin ruby plugin on a Github codespace's custome container (using devcontainer.json, docker-compose, a dockerfile...).

Dockerfile:

RUN git clone --depth 1 https://github.com/asdf-vm/asdf.git $HOME/.asdf && \
    echo '. $HOME/.asdf/asdf.sh' >> $HOME/.bashrc && \
    echo '. $HOME/.asdf/completions/asdf.bash' >> $HOME/.bashrc && \
    echo '. $HOME/.asdf/asdf.sh' >> $HOME/.profile

This first part works correctly. I'm sure because if I run just this RUN clock above, I can build my github codespace without any error and I'm also sure asdf did install because I check it via terminal of command

$ sudo su
$ asdf list

This outputs a message from asdf, showing it did install:

no plusins installed

But the second part below, where i try to install asdf's ruby plugin, gets an error:

RUN $HOME/.bashrc && \
    # install asdf ruby plugin
    asdf plugin add ruby https://github.com/asdf-vm/asdf-ruby.git && \
    # add ruby version
    asdf install ruby $RUBY_VERSION && \
    # set our machine e.g our container's global Ruby version
    asdf global ruby $RUBY_VERSION

The error I get is:

 /bin/sh: 1: /root/.bashrc: Permission denied

For a larger context on the error output, the terminal of command output shows:

#6 [ 3/11] RUN git clone --depth 1 https://github.com/asdf-vm/asdf.git $HOME/.asdf &&     echo '. $HOME/.asdf/asdf.sh' >> $HOME/.bashrc &&     echo '. $HOME/.asdf/completions/asdf.bash' >> $HOME/.bashrc &&     echo '. $HOME/.asdf/asdf.sh' >> $HOME/.profile
#6 0.746 Cloning into '/root/.asdf'...
#6 DONE 1.6s

#7 [ 4/11] RUN $HOME/.bashrc &&     asdf plugin add ruby https://github.com/asdf-vm/asdf-ruby.git &&     asdf install ruby latest &&     asdf global ruby latest
#7 0.658 /bin/sh: 1: /root/.bashrc: Permission denied
#7 ERROR: executor failed running [/bin/sh -c $HOME/.bashrc &&     asdf plugin add ruby https://github.com/asdf-vm/asdf-ruby.git &&     asdf install ruby $RUBY_VERSION &&     asdf global ruby $RUBY_VERSION]: exit code: 126

I tried different things for the first line of this RUN block, but I always run into some sorts of error:

If I do RUN sudo $HOME/.bashrc, I got the error

sudo: /root/.bashrc: command not found

If I do RUN sudo su $HOME/.bashrc, I got the error:

su: user /root/.bashrc does not exist or the user entry does not contain all the required fields

If i do RUN su vscode $HOME/.bashrc, I got the error:

bash: /root/.bashrc: Permission denied

I'm very very early beginner on docker so I could not find how to bypass this and install ruby plugin

The second RUN should be like this:

RUN bash -c "source $HOME/.bashrc  && asdf plugin add ruby https://github.com/asdf-vm/asdf-ruby.git && asdf install ruby RUBY_VERSION && asdf global ruby $RUBY_VERSION"

Yeah, it's ugly, but honestly I do not know if it's safe to break up to lines.

The key is you have to source your .bashrc to apply it to all remaining commands.