Add dotnet support

Author: cephaspad

Dockerfile

@@ -251,6 +251,20 @@ RUN for v in $GO_VERSIONS; do mise install "go@${v}"; done \
     && mise cache clear || true \
     && rm -rf "$HOME/.cache/mise" "$HOME/.local/share/mise/downloads"
 
+### DOTNET ###
+
+ARG DOTNET_CHANNELS="9.0 8.0 6.0"
+ENV DOTNET_ROOT=/usr/share/dotnet
+ENV PATH=$DOTNET_ROOT:$PATH
+RUN DOTNET_INSTALL_SCRIPT=$(mktemp) \
+    && curl -sSL https://dot.net/v1/dotnet-install.sh -o "$DOTNET_INSTALL_SCRIPT" \
+    && chmod +x "$DOTNET_INSTALL_SCRIPT" \
+    && for channel in $DOTNET_CHANNELS; do \
+         "$DOTNET_INSTALL_SCRIPT" --channel "$channel" --install-dir "$DOTNET_ROOT" --no-path; \
+       done \
+    && ln -sf "$DOTNET_ROOT/dotnet" /usr/local/bin/dotnet \
+    && rm -f "$DOTNET_INSTALL_SCRIPT"
+
 ### PHP ###
 
 ARG PHP_VERSIONS="8.4 8.3 8.2"

README.md

@@ -53,6 +53,7 @@ The following environment variables can be set to configure runtime installation
 | `CODEX_ENV_SWIFT_VERSION`  | Swift version to install   | `5.10`, `6.1`, `6.2`                              |                                                                      |
 | `CODEX_ENV_RUBY_VERSION`   | Ruby version to install  | `3.2.3`, `3.3.8`, `3.4.4`                |                                                                      |
 | `CODEX_ENV_PHP_VERSION`   | PHP version to install  | `8.4`, `8.3`, `8.2`                |                                                                      |
+| `CODEX_ENV_DOTNET_VERSION` | .NET SDK channel/version to install | `6.0`, `8.0`, `9.0`                         | Installs requested SDK into `~/.dotnet/<version>`                     |
 
 
 
@@ -62,6 +63,7 @@ In addition to the packages specified in the table above, the following packages
 
 - `bun`: 1.2.10
 - `java`: 21
+- `.NET SDKs`: 9.0, 8.0, 6.0
 - `bazelisk` / `bazel`
 - `erlang`: 27.1.2
 - `elixir`: 1.18.3

setup_universal.sh

@@ -9,6 +9,9 @@ CODEX_ENV_RUST_VERSION=${CODEX_ENV_RUST_VERSION:-}
 CODEX_ENV_GO_VERSION=${CODEX_ENV_GO_VERSION:-}
 CODEX_ENV_SWIFT_VERSION=${CODEX_ENV_SWIFT_VERSION:-}
 CODEX_ENV_PHP_VERSION=${CODEX_ENV_PHP_VERSION:-}
+CODEX_ENV_DOTNET_VERSION=${CODEX_ENV_DOTNET_VERSION:-}
+
+DEFAULT_DOTNET_ROOT=${DOTNET_ROOT:-/usr/share/dotnet}
 
 echo "Configuring language runtimes..."
 
@@ -73,3 +76,45 @@ if [ -n "${CODEX_ENV_PHP_VERSION}" ]; then
         mise use --global "php@${CODEX_ENV_PHP_VERSION}"
     fi
 fi
+
+if [ -n "${CODEX_ENV_DOTNET_VERSION}" ]; then
+    desired="${CODEX_ENV_DOTNET_VERSION}"
+    current_sdk=$(dotnet --list-sdks | awk 'NR==1 {print $1}')
+    echo "# .NET SDK: ${desired} (default: ${current_sdk:-none})"
+
+    custom_root="${HOME}/.dotnet/${desired}"
+    mkdir -p "${custom_root}"
+
+    install_args=()
+    match_pattern="^${desired}"
+    if [[ "${desired}" =~ ^[0-9]+\.[0-9]+$ ]]; then
+        install_args=(--channel "${desired}")
+        match_pattern="^${desired}\."
+    else
+        install_args=(--version "${desired}")
+    fi
+
+    needs_install=1
+    if [ -x "${custom_root}/dotnet" ]; then
+        if "${custom_root}/dotnet" --list-sdks | awk '{print $1}' | grep -Eq "${match_pattern}"; then
+            needs_install=0
+        fi
+    fi
+
+    if [ "${needs_install}" -eq 1 ]; then
+        tmp_script=$(mktemp)
+        curl -sSL https://dot.net/v1/dotnet-install.sh -o "${tmp_script}"
+        chmod +x "${tmp_script}"
+        "${tmp_script}" "${install_args[@]}" --install-dir "${custom_root}" --no-path
+        rm -f "${tmp_script}"
+    fi
+
+    export DOTNET_ROOT="${custom_root}"
+    export DOTNET_MULTILEVEL_LOOKUP=0
+    case ":${PATH}:" in
+        *:"${DOTNET_ROOT}":*) ;;
+        *) export PATH="${DOTNET_ROOT}:${PATH}" ;;
+    esac
+else
+    export DOTNET_ROOT="${DEFAULT_DOTNET_ROOT}"
+fi

verify.sh

@@ -42,6 +42,10 @@ cargo --version
 echo "- Go:"
 go version
 
+echo "- .NET:"
+dotnet --version
+dotnet --list-sdks
+
 echo "- PHP:"
 php --version
 composer --version