From a4e883b68f3585a0943e0bc36f2902bf378e642c Mon Sep 17 00:00:00 2001
From: Hugh Nimmo-Smith <hughns@users.noreply.github.com>
Date: Mon, 6 Jun 2022 19:02:46 +0100
Subject: [PATCH] Build and publish docker image from main branch (#227)

---
 .github/workflows/docker.yml | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 .github/workflows/docker.yml

diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
new file mode 100644
index 000000000..d3c10dbb7
--- /dev/null
+++ b/.github/workflows/docker.yml
@@ -0,0 +1,26 @@
+name: Build and publish docker image
+
+on:
+  push:
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+    name: Build and publish docker image
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Login to GitHub Container Registry
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      -
+        name: Build and push
+        uses: docker/build-push-action@v3
+        with:
+          push: ${{ github.ref == 'refs/heads/main' }}
+          tags: ghcr.io/matrix-org/matrix-authentication-service:sha-${{ github.sha }}