[rust] Add Alpine support for rust feature

src/rust/NOTES.md

@@ -2,11 +2,7 @@
 
 ## OS Support
 
-This Feature should work on recent versions of Debian/Ubuntu, RedHat Enterprise Linux, Fedora, Alma, RockyLinux 
-and Mariner distributions with the `apt`, `yum`, `dnf`, `microdnf` and `tdnf` package manager installed.
-
-
-**Note:** Alpine is not supported because the rustup-init binary requires glibc to run, but Alpine Linux does not include `glibc` 
-by default. Instead, it uses musl libc, which is not binary-compatible with glibc.
+This Feature should work on recent versions of Debian/Ubuntu, RedHat Enterprise Linux, Fedora, Alma, RockyLinux,
+Mariner and Alpine distributions with the `apt`, `yum`, `dnf`, `microdnf`, `tdnf` and `apk` package manager installed.
 
 `bash` is required to execute the `install.sh` script.

src/rust/README.md

@@ -32,12 +32,8 @@ Installs Rust, common Rust utilities, and their required dependencies
 
 ## OS Support
 
-This Feature should work on recent versions of Debian/Ubuntu, RedHat Enterprise Linux, Fedora, Alma, RockyLinux 
-and Mariner distributions with the `apt`, `yum`, `dnf`, `microdnf` and `tdnf` package manager installed.
-
-
-**Note:** Alpine is not supported because the rustup-init binary requires glibc to run, but Alpine Linux does not include `glibc` 
-by default. Instead, it uses musl libc, which is not binary-compatible with glibc.
+This Feature should work on recent versions of Debian/Ubuntu, RedHat Enterprise Linux, Fedora, Alma, RockyLinux,
+Mariner and Alpine distributions with the `apt`, `yum`, `dnf`, `microdnf`, `tdnf` and `apk` package manager installed.
 
 `bash` is required to execute the `install.sh` script.
 

src/rust/install.sh

@@ -58,8 +58,10 @@ elif command -v microdnf >/dev/null 2>&1; then
     PKG_MANAGER="microdnf"
 elif command -v tdnf >/dev/null 2>&1; then
     PKG_MANAGER="tdnf"
+elif command -v apk >/dev/null 2>&1; then
+    PKG_MANAGER="apk"
 else
-    echo "No supported package manager found. Supported: apt, dnf, yum, microdnf, tdnf"
+    echo "No supported package manager found. Supported: apt, dnf, yum, microdnf, tdnf, apk"
     exit 1
 fi
 
@@ -85,6 +87,11 @@ clean_package_cache() {
         tdnf)
             tdnf clean all
             ;;
+        apk)
+            if [ "$(ls -1 /var/cache/apk/ 2>/dev/null | wc -l)" -gt 0 ]; then
+                rm -rf /var/cache/apk/*
+            fi
+            ;;
     esac
 }
 
@@ -217,6 +224,12 @@ pkg_mgr_update() {
         tdnf)
             tdnf makecache || true
             ;;
+        apk)
+            if [ "$(find /var/cache/apk/* | wc -l)" = "0" ]; then
+                echo "Running apk update..."
+                apk update
+            fi
+            ;;
     esac
 }
 
@@ -230,6 +243,9 @@ is_package_installed() {
         dnf|yum|microdnf|tdnf)
             rpm -q "$package" >/dev/null 2>&1
             ;;
+        apk)
+            apk info --installed "$package" >/dev/null 2>&1
+            ;;
     esac
 }
 
@@ -266,6 +282,14 @@ check_packages() {
                     "gnupg2") packages[$i]="gnupg" ;;
                 esac
                 ;;
+            apk)
+                case "${packages[$i]}" in
+                    "libc6-dev") packages[$i]="libc-dev" ;;
+                    "python3-minimal") packages[$i]="python3" ;;
+                    "libpython3.*") packages[$i]="python3-dev" ;;
+                    "gnupg2") packages[$i]="gnupg" ;;
+                esac
+                ;;
         esac
     done
 
@@ -295,6 +319,9 @@ check_packages() {
             tdnf)
                 tdnf install -y "${missing_packages[@]}"
                 ;;
+            apk)
+                apk add --no-cache "${missing_packages[@]}"
+                ;;
         esac
     fi
 }
@@ -317,6 +344,9 @@ case "$PKG_MANAGER" in
         check_packages python3 python3-devel || true
         # LLDB might not be available in Photon/Mariner
         ;;
+    apk)
+        check_packages lldb python3 python3-dev || true
+        ;;
 esac
 
 # Get architecture
@@ -348,6 +378,11 @@ case ${download_architecture} in
     ;;
 esac
 
+clibtype="gnu"
+if ldd --version 2>&1 | grep -q 'musl'; then
+    clibtype="musl"
+fi
+
 # Install Rust
 umask 0002
 if ! grep -e "^rustlang:" /etc/group > /dev/null 2>&1; then
@@ -378,14 +413,14 @@ else
     fi
     echo "Installing Rust..."
     # Download and verify rustup sha
-    mkdir -p /tmp/rustup/target/${download_architecture}-unknown-linux-gnu/release/
-    curl -sSL --proto '=https' --tlsv1.2 "https://static.rust-lang.org/rustup/dist/${download_architecture}-unknown-linux-gnu/rustup-init" -o /tmp/rustup/target/${download_architecture}-unknown-linux-gnu/release/rustup-init
-    curl -sSL --proto '=https' --tlsv1.2 "https://static.rust-lang.org/rustup/dist/${download_architecture}-unknown-linux-gnu/rustup-init.sha256" -o /tmp/rustup/rustup-init.sha256
+    mkdir -p /tmp/rustup/target/${download_architecture}-unknown-linux-${clibtype}/release/
+    curl -sSL --proto '=https' --tlsv1.2 "https://static.rust-lang.org/rustup/dist/${download_architecture}-unknown-linux-${clibtype}/rustup-init" -o /tmp/rustup/target/${download_architecture}-unknown-linux-${clibtype}/release/rustup-init
+    curl -sSL --proto '=https' --tlsv1.2 "https://static.rust-lang.org/rustup/dist/${download_architecture}-unknown-linux-${clibtype}/rustup-init.sha256" -o /tmp/rustup/rustup-init.sha256
     cd /tmp/rustup
-    cp /tmp/rustup/target/${download_architecture}-unknown-linux-gnu/release/rustup-init  /tmp/rustup/rustup-init
+    cp /tmp/rustup/target/${download_architecture}-unknown-linux-${clibtype}/release/rustup-init  /tmp/rustup/rustup-init
     sha256sum -c rustup-init.sha256
-    chmod +x target/${download_architecture}-unknown-linux-gnu/release/rustup-init
-    target/${download_architecture}-unknown-linux-gnu/release/rustup-init -y --no-modify-path --profile "${RUSTUP_PROFILE}" ${default_toolchain_arg}
+    chmod +x target/${download_architecture}-unknown-linux-${clibtype}/release/rustup-init
+    target/${download_architecture}-unknown-linux-${clibtype}/release/rustup-init -y --no-modify-path --profile "${RUSTUP_PROFILE}" ${default_toolchain_arg}
     cd ~
     rm -rf /tmp/rustup
 fi

test/rust/rust_with_alpine.sh

@@ -0,0 +1,32 @@
+#!/bin/bash
+
+set -e
+
+# Optional: Import test library
+source dev-container-features-test-lib
+
+# Helper function to check component is installed
+check_component_installed() {
+    local component=$1
+    if rustup component list | grep -q "${component}.*installed"; then
+        return 0  # Component is installed (success)
+    else
+        return 1  # Component is not installed (failure)
+    fi
+}
+
+# Definition specific tests
+check "cargo version" cargo  --version
+check "rustc version" rustc  --version
+check "correct rust version" rustup target list | grep "aarch64-unknown-linux-musl.*installed"
+
+# Check that all specified extended components are installed
+check "rust-analyzer is installed" check_component_installed "rust-analyzer"
+check "rust-src is installed" check_component_installed "rust-src"
+check "rustfmt is installed" check_component_installed "rustfmt"
+check "clippy is installed" check_component_installed "clippy"
+check "rust-docs is installed" check_component_installed "rust-docs"
+
+# Report result
+reportResults
+

test/rust/scenarios.json

@@ -64,14 +64,14 @@
                 "components": ""
             }
         }
-    },    
+    },
     "rust_with_centos": {
         "image": "centos:centos7",
         "features": {
             "rust": {
                 "version": "latest",
                 "targets": "aarch64-unknown-linux-gnu",
-                "components": "rust-analyzer,rust-src,rustfmt,clippy,rust-docs"                
+                "components": "rust-analyzer,rust-src,rustfmt,clippy,rust-docs"
             }
         }
     },
@@ -81,7 +81,7 @@
             "rust": {
                 "version": "latest",
                 "targets": "aarch64-unknown-linux-gnu",
-                "components": "rust-analyzer,rust-src,rustfmt,clippy,rust-docs"                
+                "components": "rust-analyzer,rust-src,rustfmt,clippy,rust-docs"
             }
         }
     },
@@ -91,7 +91,7 @@
             "rust": {
                 "version": "latest",
                 "targets": "aarch64-unknown-linux-gnu",
-                "components": "rust-analyzer,rust-src,rustfmt,clippy,rust-docs"                
+                "components": "rust-analyzer,rust-src,rustfmt,clippy,rust-docs"
             }
         }
     },
@@ -101,7 +101,7 @@
             "rust": {
                 "version": "latest",
                 "targets": "aarch64-unknown-linux-gnu",
-                "components": "rust-analyzer,rust-src,rustfmt,clippy,rust-docs"                
+                "components": "rust-analyzer,rust-src,rustfmt,clippy,rust-docs"
             }
         }
     },
@@ -111,7 +111,7 @@
             "rust": {
                 "version": "latest",
                 "targets": "aarch64-unknown-linux-gnu",
-                "components": "rust-analyzer,rust-src,rustfmt,clippy,rust-docs"                
+                "components": "rust-analyzer,rust-src,rustfmt,clippy,rust-docs"
             }
         }
     },
@@ -121,7 +121,7 @@
             "rust": {
                 "version": "latest",
                 "targets": "aarch64-unknown-linux-gnu",
-                "components": "rust-analyzer,rust-src,rustfmt,clippy,rust-docs"                
+                "components": "rust-analyzer,rust-src,rustfmt,clippy,rust-docs"
             }
         }
     },
@@ -131,8 +131,18 @@
             "rust": {
                 "version": "latest",
                 "targets": "aarch64-unknown-linux-gnu",
-                "components": "rust-analyzer,rust-src,rustfmt,clippy,rust-docs"                
+                "components": "rust-analyzer,rust-src,rustfmt,clippy,rust-docs"
+            }
+        }
+    },
+    "rust_with_alpine": {
+        "image": "mcr.microsoft.com/devcontainers/base:alpine-3.21",
+        "features": {
+            "rust": {
+                "version": "latest",
+                "targets": "aarch64-unknown-linux-musl",
+                "components": "rust-analyzer,rust-src,rustfmt,clippy,rust-docs"
             }
         }
-    }                                                                
-}
+    }
+}