diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index c72545b..f1931df 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -47,6 +47,7 @@ jobs:
       - uses: docker/build-push-action@v2
         with:
           push: true
+          platforms: linux/arm64
           tags: docker.pkg.github.com/${{ github.repository }}/noolite:${{ github.sha }}
 
   latest:
diff --git a/Dockerfile b/Dockerfile
index 6968316..fa359c8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,16 +1,16 @@
-FROM alpine:latest as alpine
+FROM --platform=linux/arm64 alpine:latest as alpine
 RUN apk --no-cache add tzdata zip ca-certificates
 WORKDIR /usr/share/zoneinfo
 # -0 means no compression.  Needed because go's
 # tz loader doesn't handle compressed data.
 RUN zip -r -0 /zoneinfo.zip .
 
-FROM golang:1.16 AS builder
+FROM --platform=linux/arm64 golang:1.16 AS builder
 WORKDIR /gomod/noolite
 ADD . .
-RUN CGO_ENABLED=0 GOOS=linux GOARCH=arm go build -o /go/bin/noolite ./cmd
+RUN CGO_ENABLED=0 GOOS=linux GOARCH=arm64 go build -o /go/bin/noolite ./cmd
 
-FROM scratch
+FROM --platform=linux/arm64 scratch
 # configurations
 WORKDIR /app
 # the timezone data:
diff --git a/ansible/playbooks/deploy.yml b/ansible/playbooks/deploy.yml
index 87894d0..5a7d5a9 100644
--- a/ansible/playbooks/deploy.yml
+++ b/ansible/playbooks/deploy.yml
@@ -1,6 +1,7 @@
 ---
 - name: deploy
   hosts: rasp
+  gather_facts: no
   tasks:
     - name: login github docker registry
       docker_login:
@@ -15,6 +16,7 @@
         state: started
         pull: yes
         restart_policy: always
+        restart: yes
         devices:
           - "/dev/ttyUSB0:/dev/ttyUSB0"
         env:
diff --git a/ansible/playbooks/prepare.yml b/ansible/playbooks/prepare.yml
deleted file mode 100644
index 6ebd4a1..0000000
--- a/ansible/playbooks/prepare.yml
+++ /dev/null
@@ -1,64 +0,0 @@
----
-- name: prepare
-  hosts: rasp
-  tasks:
-    - name: upgrade packages
-      become: yes
-      apt:
-        update_cahe: yes
-        upgrade: yes
-
-    - name: install deps
-      become: yes
-      apt:
-        name: "{{ item }}"
-        state: latest
-      loop:
-        - apt-transport-https
-        - ca-certificates
-        - curl
-        - software-properties-common
-
-    - name: install GPG key
-      become: yes
-      apt_key:
-        url: "https://download.docker.com/linux/ubuntu/gpg"
-        state: present
-
-    - name: add apt repository
-      become: yes
-      apt_repository:
-        repo: "deb [arch=amd64] https://download.docker.com/linux/ubuntu {{ ansible_lsb.codename }} stable"
-        state: present
-
-    - name: install docker
-      become: yes
-      apt:
-        name: docker-ce
-        state: latest
-        update_cache: yes
-
-    - name: docker permissions
-      block:
-        - set_fact:
-            user: "{{ ansible_env['USER'] }}"
-
-        - name: ensure group "docker" exists
-          group:
-            name: docker
-            state: present
-
-        - name: add currenct user to docker group
-          become: yes
-          user:
-            name: "{{ ansible_env['USER'] }}"
-            groups: docker
-            append: yes
-
-        - name: fix docker permissions
-          become: yes
-          file:
-            path: "{{ ansible_env['HOME'] }}/.docker"
-            recurse: true
-            owner: "{{ ansible_env['USER'] }}"
-            group: docker