From 153b6d4ce0c505e78b48807a659ca4f95d3ad7ea Mon Sep 17 00:00:00 2001
From: Ryback2501 <deiturbe@gmail.com>
Date: Wed, 17 Jun 2026 16:23:02 +0200
Subject: [PATCH] fix(docker): serve .mjs modules as javascript

---
 .github/workflows/ci-jobs.yml | 8 ++++++++
 Dockerfile                    | 4 ++++
 2 files changed, 12 insertions(+)

diff --git a/.github/workflows/ci-jobs.yml b/.github/workflows/ci-jobs.yml
index 06d7571..08f43a2 100644
--- a/.github/workflows/ci-jobs.yml
+++ b/.github/workflows/ci-jobs.yml
@@ -98,6 +98,14 @@ jobs:
             sleep 2
           done
           echo "container did not become healthy"; docker logs lobstr; exit 1
+      - name: Verify .mjs is served as JavaScript
+        run: |
+          ct=$(curl -fsSI http://localhost:8080/vendor/secp256k1.mjs | tr -d '\r' | awk -F': ' 'tolower($1)=="content-type"{print $2}')
+          echo "vendor/secp256k1.mjs Content-Type: $ct"
+          case "$ct" in
+            *javascript*) echo "ok" ;;
+            *) echo "ERROR: .mjs not served as JavaScript (browsers will refuse the ES module)"; exit 1 ;;
+          esac
       - name: Stop container
         if: always()
         run: docker rm -f lobstr || true
diff --git a/Dockerfile b/Dockerfile
index ce8d8f0..0503bed 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,3 +1,7 @@
 FROM nginx:alpine
+# nginx's default mime.types has no entry for .mjs, so ES module files would be
+# served as application/octet-stream and browsers refuse to execute them. Register
+# .mjs as JavaScript alongside .js.
+RUN sed -i 's#application/javascript\([[:space:]]\+\)js;#application/javascript\1js mjs;#' /etc/nginx/mime.types
 COPY swa/ /usr/share/nginx/html/
 EXPOSE 80