[AMD CI] fix sglang version detection in daily docker image release and init container (#16367)

https://github.com/sgl-project/sglang/actions/runs/20711245259/job/59453869006?pr=16367 to be fixed in https://github.com/sgl-project/sglang/pull/15663

.github/workflows/release-docker-amd-nightly.yml

@@ -25,11 +25,27 @@ jobs:
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
+        with:
+          fetch-depth: 0  # Required for git describe to find tags
 
       - name: "Set Date"
         run: |
           echo "DATE=$(date +%Y%m%d)" >> $GITHUB_ENV
 
+      - name: Get version from latest tag
+        id: version
+        run: |
+          # Get the latest version tag sorted by version number (e.g., v0.5.7 -> 0.5.7)
+          VERSION=$(git tag -l 'v[0-9]*' --sort=-v:refname | head -1 | sed 's/^v//')
+
+          if [ -z "$VERSION" ]; then
+            echo "::error::Could not determine version from git tags"
+            exit 1
+          fi
+
+          echo "version=${VERSION}" >> $GITHUB_OUTPUT
+          echo "Detected version: ${VERSION}"
+
       - name: Login to Docker Hub
         uses: docker/login-action@v2
         with:
@@ -38,7 +54,7 @@ jobs:
 
       - name: Build and Push
         run: |
-          version=$(cat python/sglang/version.py | cut -d'"' -f2)
+          version=${{ steps.version.outputs.version }}
           echo "Version: ${version}"
 
           if [ "${{ matrix.gpu_arch }}" = "gfx942" ]; then
@@ -70,11 +86,27 @@ jobs:
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
+        with:
+          fetch-depth: 0  # Required for git describe to find tags
 
       - name: "Set Date"
         run: |
           echo "DATE=$(date +%Y%m%d)" >> $GITHUB_ENV
 
+      - name: Get version from latest tag
+        id: version
+        run: |
+          # Get the latest version tag sorted by version number (e.g., v0.5.7 -> 0.5.7)
+          VERSION=$(git tag -l 'v[0-9]*' --sort=-v:refname | head -1 | sed 's/^v//')
+
+          if [ -z "$VERSION" ]; then
+            echo "::error::Could not determine version from git tags"
+            exit 1
+          fi
+
+          echo "version=${VERSION}" >> $GITHUB_OUTPUT
+          echo "Detected version: ${VERSION}"
+
       - name: Login to Docker Hub
         uses: docker/login-action@v2
         with:
@@ -85,7 +117,7 @@ jobs:
         run: |
           set -euxo pipefail
 
-          version=$(cat python/sglang/version.py | cut -d'"' -f2)
+          version=${{ steps.version.outputs.version }}
           echo "Version: ${version}"
 
           if [ "${{ matrix.gpu_arch }}" = "gfx942" ]; then

scripts/ci/amd_ci_start_container.sh

@@ -1,27 +1,22 @@
 #!/bin/bash
 set -euo pipefail
 
-# Get version from SGLang version.py file
+# Get version from git tags
-SGLANG_VERSION_FILE="$(dirname "$0")/../../python/sglang/version.py"
+SGLANG_VERSION="v0.5.5"   # Default version, will be overridden if git tags are found
-SGLANG_VERSION="v0.5.5"   # Default version, will be overridden if version.py is found
 
-TMP_VERSION_FILE=$(mktemp)
+# Fetch tags from origin to ensure we have the latest
-if git fetch --depth=1 origin main; then
+if git fetch --tags origin; then
-  if git show origin/main:python/sglang/version.py >"$TMP_VERSION_FILE" 2>/dev/null; then
+  # Get the latest version tag sorted by version number (e.g., v0.5.7)
-    VERSION_FROM_FILE="v$(cat "$SGLANG_VERSION_FILE" | cut -d'"' -f2)"
+  VERSION_FROM_TAG=$(git tag -l 'v[0-9]*' --sort=-v:refname | head -1)
-    if [ -n "$VERSION_FROM_FILE" ]; then
+  if [ -n "$VERSION_FROM_TAG" ]; then
-      SGLANG_VERSION="$VERSION_FROM_FILE"
+    SGLANG_VERSION="$VERSION_FROM_TAG"
-      echo "Using SGLang version from origin/main: $SGLANG_VERSION"
+    echo "Using SGLang version from git tags: $SGLANG_VERSION"
   else
-      echo "Warning: Could not parse version from origin/main; using default $SGLANG_VERSION" >&2
+    echo "Warning: No version tags found; using default $SGLANG_VERSION" >&2
-    fi
-  else
-    echo "Warning: version.py not found on origin/main; using default $SGLANG_VERSION" >&2
   fi
 else
-  echo "Warning: failed to fetch origin/main; using default $SGLANG_VERSION" >&2
+  echo "Warning: Failed to fetch tags from origin; using default $SGLANG_VERSION" >&2
 fi
-rm -f "$TMP_VERSION_FILE"
 
 
 # Default base tags (can be overridden by command line arguments)