From ce413cf6bc9c60d271417d0ab00be60e58f9cdc5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?H=C3=B6rdle=20Bot?= <bot@hoerdle.local>
Date: Tue, 25 Nov 2025 09:41:50 +0100
Subject: [PATCH] feat: Implement Docker version reporting by extracting git
 tag to an environment variable for API consumption.

---
 Dockerfile                   | 10 ++++++++++
 app/api/version/route.ts     |  5 +++++
 scripts/docker-entrypoint.sh |  6 ++++++
 3 files changed, 21 insertions(+)

diff --git a/Dockerfile b/Dockerfile
index f84a1c5..e90cfe2 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -13,9 +13,16 @@ RUN npm ci
 # Rebuild the source code only when needed
 FROM base AS builder
 WORKDIR /app
+
+# Install git to extract version information
+RUN apk add --no-cache git
+
 COPY --from=deps /app/node_modules ./node_modules
 COPY . .
 
+# Extract version from git
+RUN git describe --tags --always 2>/dev/null > /tmp/version.txt || echo "unknown" > /tmp/version.txt
+
 # Next.js collects completely anonymous telemetry data about general usage.
 # Learn more here: https://nextjs.org/telemetry
 # Uncomment the following line in case you want to disable telemetry during the build.
@@ -53,6 +60,9 @@ COPY --from=builder --chown=nextjs:nodejs /app/node_modules ./node_modules
 # Create uploads directory and set permissions
 RUN mkdir -p public/uploads/covers && chown -R nextjs:nodejs public/uploads
 
+# Copy version file from builder
+COPY --from=builder /tmp/version.txt /app/version.txt
+
 USER nextjs
 
 EXPOSE 3000
diff --git a/app/api/version/route.ts b/app/api/version/route.ts
index e96baa4..2f39f9b 100644
--- a/app/api/version/route.ts
+++ b/app/api/version/route.ts
@@ -3,6 +3,11 @@ import { execSync } from 'child_process';
 
 export async function GET() {
     try {
+        // First check if version is set via environment variable (Docker build)
+        if (process.env.APP_VERSION) {
+            return NextResponse.json({ version: process.env.APP_VERSION });
+        }
+
         // Try to get the git tag/version
         let version = 'dev';
 
diff --git a/scripts/docker-entrypoint.sh b/scripts/docker-entrypoint.sh
index 6c45d9f..fc2e0d9 100755
--- a/scripts/docker-entrypoint.sh
+++ b/scripts/docker-entrypoint.sh
@@ -1,6 +1,12 @@
 #!/bin/sh
 set -e
 
+# Export version if available
+if [ -f /app/version.txt ]; then
+    export APP_VERSION=$(cat /app/version.txt)
+    echo "App version: $APP_VERSION"
+fi
+
 echo "Starting deployment..."
 
 # Run migrations