nx-webmail: switch Umbrel app to prebuilt GHCR image

.github/workflows/publish-nx-webmail-image.yml

@@ -0,0 +1,69 @@
+name: Publish nx-webmail Image
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+    paths:
+      - "nx-webmail/**"
+      - ".github/workflows/publish-nx-webmail-image.yml"
+
+permissions:
+  contents: read
+  packages: write
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to GHCR
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Read app version
+        id: meta
+        shell: bash
+        run: |
+          version=$(grep '^version:' nx-webmail/umbrel-app.yml | awk -F'"' '{print $2}')
+          if [ -z "$version" ]; then
+            echo "Could not read nx-webmail version from umbrel-app.yml" >&2
+            exit 1
+          fi
+          echo "version=$version" >> "$GITHUB_OUTPUT"
+          echo "image=ghcr.io/weektab/nx-webmail" >> "$GITHUB_OUTPUT"
+
+      - name: Build and push image
+        id: build
+        uses: docker/build-push-action@v6
+        with:
+          context: ./nx-webmail
+          file: ./nx-webmail/Dockerfile
+          platforms: linux/amd64,linux/arm64
+          push: true
+          tags: |
+            ${{ steps.meta.outputs.image }}:${{ steps.meta.outputs.version }}
+            ${{ steps.meta.outputs.image }}:latest
+
+      - name: Summary
+        shell: bash
+        run: |
+          {
+            echo "### nx-webmail image published"
+            echo ""
+            echo "- Image: \`${{ steps.meta.outputs.image }}\`"
+            echo "- Version tag: \`${{ steps.meta.outputs.version }}\`"
+            echo "- Digest: \`${{ steps.build.outputs.digest }}\`"
+          } >> "$GITHUB_STEP_SUMMARY"

nx-webmail/README.md

@@ -18,6 +18,17 @@
 3. Open:
    http://localhost:3001
 
+## Publish image for Umbrel
+
+Umbrel installation is most reliable when your app uses a prebuilt image from a registry.
+
+1. Recommended: use the GitHub Action `.github/workflows/publish-nx-webmail-image.yml`.
+2. The workflow reads `version` from `nx-webmail/umbrel-app.yml` and publishes:
+   - `ghcr.io/weektab/nx-webmail:<version>`
+   - `ghcr.io/weektab/nx-webmail:latest`
+3. Manual fallback:
+   docker buildx build --platform linux/amd64,linux/arm64 -t ghcr.io/weektab/nx-webmail:1.0.1 --push .
+
 ## Umbrel app packaging
 
 This repository is prepared for Umbrel app-store usage.
@@ -41,6 +52,7 @@ This repository is prepared for Umbrel app-store usage.
 Notes:
 - Umbrel uses the `app_proxy` service in `docker-compose.yml`.
 - Internal app port is `3001`.
+- `server` uses a prebuilt registry image (`ghcr.io/weektab/nx-webmail:1.0.1`).
 - If your store prefix changes, update `id` in `umbrel-app.yml` and `APP_HOST` in `docker-compose.yml`.
 
 ## Notes

nx-webmail/docker-compose.yml

@@ -7,10 +7,7 @@ services:
       APP_PORT: 3001
 
   server:
-    build:
+    image: ghcr.io/weektab/nx-webmail:1.0.1
-      context: .
-      dockerfile: Dockerfile
-    image: nx-webmail:1.0.0
     init: true
     restart: on-failure
     stop_grace_period: 1m

nx-webmail/umbrel-app.yml

@@ -4,7 +4,7 @@ name: Webmail
 tagline: Self-hosted IMAP/SMTP webmail client
 icon: logo.svg
 category: utilities
-version: "1.0.0"
+version: "1.0.1"
 port: 3001
 description: >-
   Webmail is a lightweight, self-hosted webmail app for connecting to external
@@ -17,7 +17,7 @@ repo: https://git.weektab.org/nexus/webmail
 support: https://git.weektab.org/nexus/webmail/issues
 gallery: []
 releaseNotes: >-
-  Initial Umbrel app packaging.
+  Switched to a prebuilt container image for more reliable Umbrel installs.
 dependencies: []
 path: ""
 defaultUsername: ""