Add lscr.io support to Docker update checker

server/routes/updates.ts

@@ -86,25 +86,26 @@ async function getLatestDigest(image: string, tag: string): Promise<string | nul
   } catch { return null }
 }
 
-async function getGhcrLatestDigest(image: string, tag: string): Promise<string | null> {
-  const cacheKey = `ghcr:${image}:${tag}`
+async function getGenericRegistryDigest(
+  registry: string, image: string, tag: string, bearerToken?: string
+): Promise<string | null> {
+  const cacheKey = `${registry}:${image}:${tag}`
   const cached = fromCache<string>(cacheKey, HUB_TTL)
   if (cached) return cached
 
   try {
-    const ghToken = process.env.GITHUB_TOKEN
-    const authHeaders: Record<string, string> = ghToken
-      ? { Authorization: `Bearer ${ghToken}` }
+    const authHeaders: Record<string, string> = bearerToken
+      ? { Authorization: `Bearer ${bearerToken}` }
       : {}
 
     const tokenRes = await axios.get(
-      `https://ghcr.io/token?service=ghcr.io&scope=repository:${image}:pull`,
+      `https://${registry}/token?service=${registry}&scope=repository:${image}:pull`,
       { headers: authHeaders, timeout: 8000 }
     )
     const token = tokenRes.data.token as string
 
     const res = await axios.head(
-      `https://ghcr.io/v2/${image}/manifests/${tag}`,
+      `https://${registry}/v2/${image}/manifests/${tag}`,
       { headers: { Authorization: `Bearer ${token}`, Accept: MANIFEST_ACCEPT }, timeout: 10000 }
     )
     const digest = res.headers['docker-content-digest'] as string | undefined
@@ -113,6 +114,14 @@ async function getGhcrLatestDigest(image: string, tag: string): Promise<string |
   } catch { return null }
 }
 
+async function getGhcrLatestDigest(image: string, tag: string): Promise<string | null> {
+  return getGenericRegistryDigest('ghcr.io', image, tag, process.env.GITHUB_TOKEN)
+}
+
+async function getLscrLatestDigest(image: string, tag: string): Promise<string | null> {
+  return getGenericRegistryDigest('lscr.io', image, tag)
+}
+
 router.get('/docker', async (_req, res) => {
   const host = process.env.PORTAINER_HOST
   if (!host) {
@@ -168,6 +177,7 @@ router.get('/docker', async (_req, res) => {
         const { registry, name, tag } = parseImage(rawImage)
         const isDockerHub = registry === 'docker.io'
         const isGhcr     = registry === 'ghcr.io'
+        const isLscr     = registry === 'lscr.io'
 
         let upToDate: boolean | null = null
         if (isDockerHub && repoDigest) {
@@ -176,6 +186,9 @@ router.get('/docker', async (_req, res) => {
         } else if (isGhcr && repoDigest) {
           const latest = await getGhcrLatestDigest(name, tag)
           if (latest) upToDate = latest === repoDigest
+        } else if (isLscr && repoDigest) {
+          const latest = await getLscrLatestDigest(name, tag)
+          if (latest) upToDate = latest === repoDigest
         }
 
         containers.push({