From 416684c0c1a35792821d178eed79ac5a9d466f93 Mon Sep 17 00:00:00 2001
From: Jamie Banks <jamie@jdbnet.co.uk>
Date: Fri, 12 Jun 2026 14:43:20 +0100
Subject: [PATCH] feat: inject version string into binary via Docker build
 argument

---
 .gitea/workflows/release.yml | 2 +-
 Dockerfile                   | 4 +++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/.gitea/workflows/release.yml b/.gitea/workflows/release.yml
index 2b03913..91980db 100644
--- a/.gitea/workflows/release.yml
+++ b/.gitea/workflows/release.yml
@@ -36,7 +36,7 @@ jobs:
 
       - name: Build and push Docker image
         run: |
-          docker build -t cr.jdbnet.co.uk/public/goencode:${{ steps.get_version.outputs.CLEAN_VERSION }} .
+          docker build --build-arg APP_VERSION=${{ steps.get_version.outputs.VERSION }} -t cr.jdbnet.co.uk/public/goencode:${{ steps.get_version.outputs.CLEAN_VERSION }} .
           docker push cr.jdbnet.co.uk/public/goencode:${{ steps.get_version.outputs.CLEAN_VERSION }}
           docker tag cr.jdbnet.co.uk/public/goencode:${{ steps.get_version.outputs.CLEAN_VERSION }} cr.jdbnet.co.uk/public/goencode:latest
           docker push cr.jdbnet.co.uk/public/goencode:latest
diff --git a/Dockerfile b/Dockerfile
index d59a0fc..92c575c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,11 +6,13 @@ WORKDIR /app
 # Copy source code
 COPY . .
 
+ARG APP_VERSION=dev
+
 # Run go mod tidy to generate go.sum based on source
 RUN go mod tidy
 
 # Build the application
-RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -o /app/bin/goencode ./cmd/goencode
+RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -ldflags="-s -w -X main.Version=${APP_VERSION}" -o /app/bin/goencode ./cmd/goencode
 
 # Final stage
 FROM debian:bookworm-slim