diff --git a/.github/workflows/docker-publish.yml b/.github/workflows/docker-publish.yml
index fcdecac..6604077 100644
--- a/.github/workflows/docker-publish.yml
+++ b/.github/workflows/docker-publish.yml
@@ -1,25 +1,31 @@
-name: Build relayman
+name: Docker
 
 on:
   push:
+    # Publish `master` as Docker `latest` image.
     branches:
       - master
 
+    # Publish `v1.2.3` tags as releases.
+    tags:
+      - v*
+
   # Run tests for any PRs.
   pull_request:
 
 env:
-  ECR_REGISTRY: 606804169143.dkr.ecr.ap-southeast-1.amazonaws.com
-  ECR_BUILD_REPO: relayman
-
+  # TODO: Change variable to your image's name.
+  IMAGE_NAME: relayman
+  REGISTRY: https://ghcr.io
 jobs:
   # Run tests.
   # See also https://docs.docker.com/docker-hub/builds/automated-testing/
   test:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
+
       - name: Run tests
         run: |
           if [ -f docker-compose.test.yml ]; then
@@ -28,88 +34,32 @@ jobs:
           else
             docker build . --file Dockerfile
           fi
-
-  setup_env:
-    if: ${{ github.event_name == 'push' }}
+  # Push image to GitHub Packages.
+  # See also https://docs.docker.com/docker-hub/builds/
+  push:
+    # Ensure test job passes before pushing image.
     needs: test
-    environment: test
-    runs-on: ubuntu-20.04
-    outputs:
-      ecr_password: ${{ steps.ecr_password.outputs.ecr_password }}
-      container_image_uri: ${{ steps.image_tag.outputs.container_image_uri }}
-      image_tag: ${{ steps.image_tag.outputs.image_tag }}
-    steps:
-      - name: Set up AWS CLI
-        uses: chrislennon/action-aws-cli@1.1
-      - id: ecr_password
-        name: Retrieve ECR password
-        env:
-          AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
-          AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
-          AWS_DEFAULT_REGION: ap-southeast-1
-        run: echo "ecr_password=$(aws ecr get-login-password)" >> $GITHUB_OUTPUT
-      - id: image_tag
-        name: Setup image tags
-        run: |
-          IMAGE_TAG=latest
-          echo "image_tag=$IMAGE_TAG" >> $GITHUB_OUTPUT
-          echo "container_image_uri=$ECR_REGISTRY/$ECR_BUILD_REPO:$IMAGE_TAG" >> $GITHUB_OUTPUT
-
-  docker_build:
-    if: ${{ github.event_name == 'push' }}
-    timeout-minutes: 40
-    needs:
-      - setup_env
-    environment: test
-    runs-on: ubuntu-20.04
-    steps:
-      - name: Check Out Repo
-        uses: actions/checkout@v3
 
-      - name: Set up Docker Buildx
-        id: buildx
-        uses: docker/setup-buildx-action@v2
-        with:
-          buildkitd-flags: --debug
-          install: true
+    runs-on: ubuntu-latest
+    if: github.event_name == 'push'
 
-      - name: Cache Docker layers
-        uses: actions/cache@v3
-        with:
-          path: /tmp/.buildx-cache-${{ matrix.gemfile }}
-          key: ${{ runner.os }}-multi-buildx-${{ github.sha }}-${{ matrix.gemfile }}
-          restore-keys: |
-            ${{ runner.os }}-multi-buildx
+    steps:
+      - uses: actions/checkout@v4
 
-      - name: Configure AWS credentials
-        uses: aws-actions/configure-aws-credentials@v1
-        with:
-          aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
-          aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
-          aws-region: ap-southeast-1
+      - name: Build image
+        run: docker build . --file Dockerfile --tag $IMAGE_NAME
 
-      - name: Login to ECR
-        uses: docker/login-action@v2
+      - name: Log in to the GitHub Container registry
+        uses: docker/login-action@v3
         with:
-          registry: ${{ env.ECR_REGISTRY }}
-
-      - name: Build image
-        uses: docker/build-push-action@v3
-        env:
-          CONTAINER_IMAGE_URI: ${{ needs.setup_env.outputs.container_image_uri }}
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Build and push Docker image
+        id: push
+        uses: docker/build-push-action@v5
         with:
           context: .
-          builder: ${{ steps.buildx.outputs.name }}
-          file: Dockerfile
           push: true
-          tags: ${{ env.CONTAINER_IMAGE_URI }}
-          cache-from: type=local,src=/tmp/.buildx-cache-${{ matrix.gemfile }}
-          # Note the mode=max here
-          # More: https://github.com/moby/buildkit#--export-cache-options
-          # And: https://github.com/docker/buildx#--cache-tonametypetypekeyvalue
-          cache-to: type=local,mode=max,dest=/tmp/.buildx-cache-new-${{ matrix.gemfile }}
-
-      - name: Move cache
-        run: |
-          rm -rf /tmp/.buildx-cache-${{ matrix.gemfile }}
-          mv /tmp/.buildx-cache-new-${{ matrix.gemfile }} /tmp/.buildx-cache-${{ matrix.gemfile }}
+          tags: $IMAGE_NAME
+          labels: $IMAGE_NAME
diff --git a/Dockerfile b/Dockerfile
index 41abc6e..fcc99b6 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -26,7 +26,7 @@ RUN mix release
 
 FROM alpine:latest AS app
 
-RUN apk add --update --no-cache bash libcrypto1.1 libstdc++
+RUN apk add --update --no-cache bash openssl libstdc++
 
 WORKDIR /app