feat(docker): set default UV_TOOL_BIN_DIR

Author: samypr100

.github/workflows/build-docker.yml

@@ -221,6 +221,7 @@ jobs:
           cat <<EOF > Dockerfile
           FROM ${BASE_IMAGE}
           COPY --from=${{ env.UV_GHCR_IMAGE }}:latest /uv /uvx /usr/local/bin/
+          ENV UV_TOOL_BIN_DIR="/usr/local/bin"
           ENTRYPOINT []
           CMD ["/usr/local/bin/uv"]
           EOF

docs/guides/integration/docker.md

@@ -77,6 +77,9 @@ As with the distroless image, each derived image is published with uv version ta
 `ghcr.io/astral-sh/uv:{major}.{minor}.{patch}-{base}` and
 `ghcr.io/astral-sh/uv:{major}.{minor}-{base}`, e.g., `ghcr.io/astral-sh/uv:0.7.13-alpine`.
 
+In addition, starting with `0.8` each derived image also sets `UV_TOOL_BIN_DIR` to `/usr/local/bin`
+to allow `uv tool install` to work as expected with the default user.
+
 For more details, see the [GitHub Container](https://github.com/astral-sh/uv/pkgs/container/uv)
 page.