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Dockerfile:

```FROM rust:1.65.0

WORKDIR /app

ARG USERNAME=vscode
ARG USER_UID=1000
ARG USER_GID=$USER_UID

# Create the user
RUN groupadd --gid $USER_GID $USERNAME \
    &amp;&amp; useradd --uid $USER_UID --gid $USER_GID -m $USERNAME

RUN mkdir /app/target
RUN chown $USERNAME:$USERNAME /app/target
USER $USERNAME

ARG HOME_TMPDIR="/home/$USERNAME/.tmp"
RUN mkdir "$HOME_TMPDIR"
RUN chmod -R 777 "$HOME_TMPDIR"
RUN curl -fsSL <https://get.pulumi.com> | TMPDIR="$HOME_TMPDIR" sh
RUN rustup component add rustfmt clippy
RUN cargo install sqlx-cli

CMD ["echo", "Container is running"]```

the error:

```[2022-12-11T04:32:28.502Z] + Extracting to /home/vscode/.pulumi/bin
[2022-12-11T04:32:28.503Z] mktemp: failed to create directory via template 'pulumi.XXXXXXXXXX': Permission denied
[2022-12-11T04:32:28.503Z] 
We're sorry, but it looks like something might have gone wrong during installation.
If you need help, please join us on <https://slack.pulumi.com/>
[2022-12-11T04:32:28.712Z] The command '/bin/sh -c curl -fsSL <https://get.pulumi.com> | TMPDIR="$HOME_TMPDIR" sh' returned a non-zero code: 1```

I figured that when it was creating the temp directory, it didn't use `-t` so it was trying to create under `/`  directory. I managed to work around this by changing the Dockerfile RUN line to `RUN cd /tmp &amp;&amp; (curl -fsSL <https://get.pulumi.com> | sh) &amp;&amp; cd -`  but I wonder why `-t` was not provided in the official install script?

Sounds like a bug, I'll see if I can get that changed.

<https://github.com/pulumi/get.pulumi.com/pull/139>