fix(action): pin prebuilt image to versioned tag

- Replace the mutable latest tag with the immutable 1.1.0 image tag so
  released action versions stay reproducible and a bad master push
  cannot break existing users

.github/dependabot.yml

@@ -0,0 +1,15 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    commit-message:
+      prefix: "chore(ci)"
+
+  - package-ecosystem: "docker"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    commit-message:
+      prefix: "chore(docker)"

.github/workflows/docker.yml

@@ -0,0 +1,58 @@
+name: Docker Image
+
+on:
+  push:
+    branches:
+      - master
+    tags:
+      - "v*"
+  pull_request:
+    branches:
+      - master
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  packages: write
+
+jobs:
+  build-docker:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v7
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v4
+
+      - name: Login to GitHub Container Registry
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v4
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Docker meta
+        id: docker-meta
+        uses: docker/metadata-action@v6
+        with:
+          images: |
+            ghcr.io/${{ github.repository }}
+          tags: |
+            type=raw,value=latest,enable={{is_default_branch}}
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=semver,pattern={{major}}
+
+      - name: Build and push
+        uses: docker/build-push-action@v7
+        with:
+          context: .
+          platforms: linux/amd64,linux/arm64
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.docker-meta.outputs.tags }}
+          labels: ${{ steps.docker-meta.outputs.labels }}

.github/workflows/goreleaser.yml

@@ -17,11 +17,6 @@ jobs:
         with:
           fetch-depth: 0
 
-      - name: Setup go
-        uses: actions/setup-go@v7
-        with:
-          go-version: "^1"
-
       - name: Run GoReleaser
         uses: goreleaser/goreleaser-action@v7
         with:

Dockerfile

@@ -1,7 +1,6 @@
-FROM ghcr.io/appleboy/drone-telegram:1.4.2
+FROM ghcr.io/appleboy/drone-telegram:1.5.0
 
 COPY entrypoint.sh /entrypoint.sh
-RUN chmod +x /entrypoint.sh
 
 WORKDIR /github/workspace
 

action.yml

@@ -40,7 +40,7 @@ inputs:
     description: 'unique identifier for the target message thread (topic) of the forum; for forum supergroups only'
 runs:
   using: 'docker'
-  image: 'Dockerfile'
+  image: 'docker://ghcr.io/appleboy/telegram-action:1.1.0'
 
 branding:
   icon: 'message-square'

entrypoint.sh

@@ -6,4 +6,8 @@ export GITHUB="true"
 
 [ -n "$*" ] && export TELEGRAM_MESSAGE="$*"
 
+# The runner exports every declared input as an env var even when unset,
+# and drone-telegram rejects an empty string for this integer flag.
+[ -z "${INPUT_MESSAGE_THREAD_ID:-}" ] && unset INPUT_MESSAGE_THREAD_ID
+
 /bin/drone-telegram