diff --git a/.github/workflows/force.yml b/.github/workflows/force.yml
new file mode 100644
index 0000000..0b5cdae
--- /dev/null
+++ b/.github/workflows/force.yml
@@ -0,0 +1,75 @@
+name: build by force
+
+on:
+  #push:
+  #  branches:
+  #    - master
+  #    - main
+  workflow_dispatch:
+  #repository_dispatch:
+  #  types: webssh
+
+jobs:
+  webssh:
+    runs-on: ubuntu-20.04
+    steps:
+      - name: checkout code
+        uses: actions/checkout@v2
+      - name: docker login
+        run: docker login -u ${{ secrets.DOCKERUSERNAME }} -p ${{ secrets.DOCKERAPIKEY }}
+      - name: treehouses webssh
+        run: |
+          export DOCKER_CLI_EXPERIMENTAL=enabled
+          repo="treehouses/webssh"
+          base="treehouses/alpine"
+          source .github/workflows/utils.sh
+          echo "amd64"
+          baseamd64=$(get_variant_sha "$base" "latest" "amd64")
+          echo $baseamd64
+          # repoamd64=$(get_manifest_sha "$repo:latest" "amd64")
+          # echo $repoamd64
+          echo "arm"
+          basearm=$(get_tag_sha "$base" "latest")
+          echo $basearm
+          # repoarm=$(get_manifest_sha "$repo:latest" "arm")
+          # echo $repoarm
+          echo "arm64"
+          basearm64=$(get_variant_sha "$base" "latest" "arm64")
+          echo $basearm64
+          # repoarm64=$(get_manifest_sha "$repo:latest" "arm64")
+          # echo $repoarm64
+          echo "change"
+          flag=true #$(compare_sha "$baseamd64" "$repoamd64" "$basearm" "$repoarm" "$basearm64" "$repoarm64")
+          echo $flag
+          if [[ $flag == true ]]; then
+            docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
+            build_image "$base:latest" amd64 $repo
+            build_image "$base:latest" arm $repo
+            build_image "$base:latest" arm64 $repo
+            deploy_image $repo arm
+            deploy_image $repo amd64
+            deploy_image $repo arm64
+            sudo npm install -g @treehouses/cli
+            export gitter_channel="${{ secrets.CHANNEL }}"
+            echo "tags"
+            tag="$(date +%Y%m%d%H%M)"
+            echo $tag
+            docker manifest create $repo:$tag $repo-tags:amd64 $repo-tags:arm $repo-tags:arm64
+            docker manifest annotate $repo:$tag $repo-tags:amd64 --arch amd64
+            docker manifest annotate $repo:$tag $repo-tags:arm64 --arch arm64
+            docker manifest annotate $repo:$tag $repo-tags:arm --arch arm
+            docker manifest inspect $repo:$tag
+            docker manifest push $repo:$tag
+            tag2="latest"
+            echo $tag2
+            docker manifest create $repo:$tag2 $repo-tags:amd64 $repo-tags:arm $repo-tags:arm64
+            docker manifest annotate $repo:$tag2 $repo-tags:amd64 --arch amd64
+            docker manifest annotate $repo:$tag2 $repo-tags:arm64 --arch arm64
+            docker manifest annotate $repo:$tag2 $repo-tags:arm --arch arm
+            docker manifest inspect $repo:$tag2
+            docker manifest push $repo:$tag2
+            echo "https://hub.docker.com/r/treehouses/webssh/tags"
+            treehouses feedback "new treehouses/webssh check https://hub.docker.com/r/treehouses/webssh/tags"
+          else
+            echo "no changes"
+          fi
diff --git a/.github/workflows/utils.sh b/.github/workflows/utils.sh
new file mode 100755
index 0000000..eef5302
--- /dev/null
+++ b/.github/workflows/utils.sh
@@ -0,0 +1,112 @@
+#!/bin/bash
+
+get_variant_sha(){
+    local sha
+    docker_repo=$1  #alpine or vmnet/alpine
+    manifest_tag=$2
+    docker_image=$docker_repo:$manifest_tag
+    arch=$3
+    variant=$4
+    export DOCKER_CLI_EXPERIMENTAL=enabled
+
+    docker pull -q  ${docker_image} &>/dev/null
+    docker manifest inspect ${docker_image} > "$2".txt
+
+    sha=""
+    i=0
+    while [ "$sha" == "" ] && read -r line
+    do
+        arch=$(jq .manifests[$i].platform.architecture "$2".txt |sed -e 's/^"//' -e 's/"$//')
+        if [ "$arch" = "$3" ] && [ "$arch" !=  "arm" ]; then
+            sha=$(jq .manifests[$i].digest "$2".txt  |sed -e 's/^"//' -e 's/"$//')
+            echo ${sha}
+        elif [ "$arch" = "$3" ]; then
+            variant=$(jq .manifests[$i].platform.variant "$2".txt |sed -e 's/^"//' -e 's/"$//')
+            if [ "$variant" == "$4" ]; then
+                sha=$(jq .manifests[$i].digest "$2".txt  |sed -e 's/^"//' -e 's/"$//')
+                echo ${sha}
+            fi
+        fi
+        i=$i+1
+    done < "$2".txt
+}
+
+get_manifest_sha (){
+    local repo=$1
+    local arch=$2
+    docker pull -q $1 &>/dev/null
+    docker manifest inspect $1 > "$2".txt
+    sha=""
+    i=0
+    while [ "$sha" == "" ] && read -r line
+    do
+        archecture=$(jq .manifests[$i].platform.architecture "$2".txt |sed -e 's/^"//' -e 's/"$//')
+        if [ "$archecture" = "$2" ];then
+            sha=$(jq .manifests[$i].digest "$2".txt  |sed -e 's/^"//' -e 's/"$//')
+            echo ${sha}
+        fi
+        i=$i+1
+    done < "$2".txt
+}
+
+get_tag_sha(){
+    local repo=$1
+    local tag=$2
+    docker pull "$repo:$tag" &>/dev/null
+    sha=$(docker inspect --format='{{index .RepoDigests 0}}' "$repo:$tag" 2>/dev/null | cut -d @ -f 2)
+    echo $sha
+}
+
+build_image(){
+  local repo=$1  # this is the base repo, for example treehouses/alpine
+  local arch=$2  #arm arm64 amd64
+  local tag_repo=$3  # this is the tag repo, for example treehouses/node
+  if [ $# -le 1 ]; then
+    echo "missing parameters."
+    exit 1
+  fi
+  sha=$(get_manifest_sha $@)
+  echo $sha
+  base_image="$repo@$sha"
+  echo $base_image
+  if [ -n "$sha" ]; then
+    tag=$tag_repo-tags:$arch
+    sed "s|{{base_image}}|$base_image|g" Dockerfile.template > Dockerfile.$arch
+    docker buildx build --platform linux/$arch -t $tag -f Dockerfile.$arch .
+  fi
+}
+
+deploy_image(){
+  local repo=$1
+  local arch=$2  #arm arm64 amd64
+  tag_arch=$repo-tags:$arch
+  tag_time=$(date +%Y%m%d%H%M)
+  tag_arch_time=$repo-tags:$arch-$tag_time
+  echo $tag_arch_time
+  docker tag $tag_arch $tag_arch_time
+  docker push $tag_arch_time
+  docker tag $tag_arch_time $tag_arch
+  docker push $tag_arch
+}
+
+compare_sha () {
+    if [ "$1" != "$2" ] || [ "$3" != "$4" ] || [ "$5" != "$6" ]; then
+        echo "true"
+    else
+        echo "false"
+    fi
+}
+
+create_manifests(){
+    local repo=$1
+    local tag=$2
+    local x86=$3
+    local rpi=$4
+    local arm64=$5
+    docker manifest create $repo:$tag $x86 $rpi $arm64
+    docker manifest create $repo:latest $x86 $rpi $arm64
+    docker manifest annotate $repo:latest $rpi --arch arm
+    docker manifest annotate $repo:$tag $arm64 --arch arm64
+    docker manifest annotate $repo:latest $arm64 --arch arm64
+    docker manifest annotate $repo:$tag $rpi --arch arm
+}
diff --git a/.github/workflows/webssh.yml b/.github/workflows/webssh.yml
new file mode 100644
index 0000000..74a3f9b
--- /dev/null
+++ b/.github/workflows/webssh.yml
@@ -0,0 +1,75 @@
+name: build on change
+
+on:
+  push:
+    branches:
+      - master
+      - main
+  workflow_dispatch:
+  repository_dispatch:
+    types: webssh
+
+jobs:
+  webssh:
+    runs-on: ubuntu-20.04
+    steps:
+      - name: checkout code
+        uses: actions/checkout@v2
+      - name: docker login
+        run: docker login -u ${{ secrets.DOCKERUSERNAME }} -p ${{ secrets.DOCKERAPIKEY }}
+      - name: treehouses webssh
+        run: |
+          export DOCKER_CLI_EXPERIMENTAL=enabled
+          repo="treehouses/webssh"
+          base="treehouses/alpine"
+          source .github/workflows/utils.sh
+          echo "amd64"
+          baseamd64=$(get_variant_sha "$base" "latest" "amd64")
+          echo $baseamd64
+          repoamd64=$(get_manifest_sha "$repo:latest" "amd64")
+          echo $repoamd64
+          echo "arm"
+          basearm=$(get_tag_sha "$base" "latest")
+          echo $basearm
+          repoarm=$(get_manifest_sha "$repo:latest" "arm")
+          echo $repoarm
+          echo "arm64"
+          basearm64=$(get_variant_sha "$base" "latest" "arm64")
+          echo $basearm64
+          repoarm64=$(get_manifest_sha "$repo:latest" "arm64")
+          echo $repoarm64
+          echo "change"
+          flag=$(compare_sha "$baseamd64" "$repoamd64" "$basearm" "$repoarm" "$basearm64" "$repoarm64")
+          echo $flag
+          if [[ $flag == true ]]; then
+            docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
+            build_image "$base:latest" amd64 $repo
+            build_image "$base:latest" arm $repo
+            build_image "$base:latest" arm64 $repo
+            deploy_image $repo arm
+            deploy_image $repo amd64
+            deploy_image $repo arm64
+            sudo npm install -g @treehouses/cli
+            export gitter_channel="${{ secrets.CHANNEL }}"
+            echo "tags"
+            tag="$(date +%Y%m%d%H%M)"
+            echo $tag
+            docker manifest create $repo:$tag $repo-tags:amd64 $repo-tags:arm $repo-tags:arm64
+            docker manifest annotate $repo:$tag $repo-tags:amd64 --arch amd64
+            docker manifest annotate $repo:$tag $repo-tags:arm64 --arch arm64
+            docker manifest annotate $repo:$tag $repo-tags:arm --arch arm
+            docker manifest inspect $repo:$tag
+            docker manifest push $repo:$tag
+            tag2="latest"
+            echo $tag2
+            docker manifest create $repo:$tag2 $repo-tags:amd64 $repo-tags:arm $repo-tags:arm64
+            docker manifest annotate $repo:$tag2 $repo-tags:amd64 --arch amd64
+            docker manifest annotate $repo:$tag2 $repo-tags:arm64 --arch arm64
+            docker manifest annotate $repo:$tag2 $repo-tags:arm --arch arm
+            docker manifest inspect $repo:$tag2
+            docker manifest push $repo:$tag2
+            echo "https://hub.docker.com/r/treehouses/webssh/tags"
+            treehouses feedback "new treehouses/webssh check https://hub.docker.com/r/treehouses/webssh/tags"
+          else
+            echo "no changes"
+          fi
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100755
index c4296ec..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,58 +0,0 @@
-sudo: required
-dist: bionic
-addons:
-  apt:
-    update: true
-    packages:
-      - docker-ce
-services:
-  - docker
-script:
-  - export DOCKER_CLI_EXPERIMENTAL=enabled
-  - source utils.sh
-  - alpine_arm_sha=$(get_manifest_sha "treehouses/alpine:latest" "arm")
-  - echo $alpine_arm_sha
-  - alpine_amd64_sha=$(get_manifest_sha "treehouses/alpine:latest" "amd64")
-  - echo $alpine_amd64_sha
-  - alpine_arm64_sha=$(get_manifest_sha "treehouses/alpine:latest" "arm64")
-  - echo $alpine_arm64_sha
-  - webssh_arm_sha=$(get_manifest_sha "treehouses/webssh:latest" "arm")
-  - echo $webssh_arm_sha
-  - webssh_amd64_sha=$(get_manifest_sha "treehouses/webssh" "amd64")
-  - echo $webssh_amd64_sha
-  - webssh_arm64_sha=$(get_manifest_sha "treehouses/webssh" "arm64")
-  - echo $webssh_arm64_sha
-  - flag_arm=$(is_base "treehouses/alpine@"$alpine_arm_sha "treehouses/webssh@"$webssh_arm_sha )
-  - echo $flag_arm
-  - flag_amd64=$(is_base "treehouses/alpine@"$alpine_amd64_sha "treehouses/webssh@"$webssh_amd64_sha )
-  - echo $flag_amd64
-  - flag_arm64=$(is_base "treehouses/alpine@"$alpine_arm64_sha "treehouses/webssh@"$webssh_arm64_sha )
-  - echo $flag_arm64
-  - echo $DOCKERAPIKEY | docker login -u "sevenseas" --password-stdin
-  - docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
-  - build_image "treehouses/alpine:latest" arm "treehouses/webssh" #base image is arm arch
-  - build_image "treehouses/alpine:latest" amd64 "treehouses/webssh" #base image is amd64 arch
-  - build_image "treehouses/alpine:latest" arm64 "treehouses/webssh" #base image is arm64 arch
-  #- "./docker-build.sh treehouses/alpine:latest arm arm64 amd64"
-  - flag=$(compare "treehouses/alpine@"$alpine_arm_sha "treehouses/webssh@"$webssh_arm_sha "treehouses/alpine@"$alpine_amd64_sha "treehouses/webssh@"$webssh_amd64_sha  "treehouses/alpine@"$alpine_arm64_sha "treehouses/webssh@"$webssh_arm64_sha "treehouses/webssh:latest" "treehouses/webssh-tags:amd64")
-  - echo $flag
-before_deploy:
-  - deploy_image "treehouses/webssh" arm
-  - deploy_image "treehouses/webssh" amd64
-  - deploy_image "treehouses/webssh" arm64
-  - tag_time=$(date +%Y%m%d%H%M)
-  - echo $tag_time
-  - tag_latest="latest"
-  - create_manifest treehouses/webssh $tag_latest $tag_time treehouses/webssh-tags:arm treehouses/webssh-tags:arm64 treehouses/webssh-tags:amd64
-  - docker manifest inspect treehouses/webssh:$tag_latest
-  - docker manifest inspect treehouses/webssh:$tag_time
-deploy:
-  - provider: script
-    script: docker manifest push treehouses/webssh:$tag_latest; docker manifest push treehouses/webssh:$tag_time
-    skip_cleanup: true
-    on:
-      all_branches: true
-      condition: "$flag = true"
-env:
-  global:
-    secure: "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"
diff --git a/utils.sh b/utils.sh
deleted file mode 100755
index a365f9d..0000000
--- a/utils.sh
+++ /dev/null
@@ -1,118 +0,0 @@
-#!/bin/bash
-
-get_manifest_sha() {
-  local repo=$1
-  local arch=$2
-  docker pull -q $1 &>/dev/null
-  docker manifest inspect $1 > "$2".txt
-  sha=""
-  i=0
-  while [ "$sha" == "" ] && read -r line; do
-    architecture=$(jq .manifests[$i].platform.architecture "$2".txt |sed -e 's/^"//' -e 's/"$//')
-    if [ "$architecture" = "$2" ];then
-      sha=$(jq .manifests[$i].digest "$2".txt  |sed -e 's/^"//' -e 's/"$//')
-      echo ${sha}
-    fi
-    i=$i+1
-  done < "$2".txt
-}
-
-get_sha() {
-  repo=$1
-  docker pull $1 &>/dev/null
-  sha=$(docker image inspect $1 | jq --raw-output '.[0].RootFS.Layers|.[]')   # [0] means first element of list,[]means all the elments of lists
-  echo $sha
-}
-
-is_base() {
-  local base_sha    # alpine
-  local image_sha   # new image
-  local base_repo=$1
-  local image_repo=$2
-
-  base_sha=$(get_sha $base_repo)
-  image_sha=$(get_sha $image_repo)
-
-  for i in $base_sha; do
-    local found="false"
-    for j in $image_sha; do
-      if [[ $i = $j ]]; then
-        found="true"
-        break
-      fi
-    done
-    if [ $found == "false" ]; then
-      echo "false"
-      return 0
-    fi
-  done
-  echo "true"
-}
-
-image_version() {
-  local version
-  repo=$1    # nginx repo
-  version=$(docker run -it $1 /bin/sh -c "nginx -v" |awk '{print$3}')
-  echo $version
-}
-
-compare() {
-  result_arm=$(is_base $1 $2)
-  result_arm64=$(is_base $3 $4)
-  result_amd64=$(is_base $5 $6)
-  if [ $result_arm == "false" ] || [ $result_amd64 == "false" ] || [ $result_arm64 == "false" ];
-  then
-    echo "true"
-  else
-    echo "false"
-  fi
-}
-
-create_manifest() {
-  local repo=$1
-  local tag1=$2
-  local tag2=$3
-  local x86=$4
-  local rpi=$5
-  local arm64=$6
-  docker manifest create $repo:$tag1 $x86 $rpi $arm64
-  docker manifest create $repo:$tag2 $x86 $rpi $arm64
-  docker manifest annotate $repo:$tag1 $x86 --arch amd64
-  docker manifest annotate $repo:$tag1 $rpi --arch arm
-  docker manifest annotate $repo:$tag1 $arm64 --arch arm64
-  docker manifest annotate $repo:$tag2 $x86 --arch amd64
-  docker manifest annotate $repo:$tag2 $rpi --arch arm
-  docker manifest annotate $repo:$tag2 $arm64 --arch arm64
-}
-
-build_image(){
-  local repo=$1  # this is the base repo, for example treehouses/alpine
-  local arch=$2  #arm arm64 amd64
-  local tag_repo=$3  # this is the tag repo, for example treehouses/node
-  if [ $# -le 1 ]; then
-    echo "missing parameters."
-    exit 1
-  fi
-  sha=$(get_manifest_sha $@)
-  echo $sha
-  base_image="$repo@$sha"
-  echo $base_image
-  if [ -n "$sha" ]; then
-    tag=$tag_repo-tags:$arch
-    sed "s|{{base_image}}|$base_image|g" Dockerfile.template > Dockerfile.$arch
-    docker build -t $tag -f Dockerfile.$arch .
-  fi
-}
-
-deploy_image(){
-  local repo=$1
-  local arch=$2  #arm arm64 amd64
-  tag_arch=$repo-tags:$arch
-  tag_time=$(date +%Y%m%d%H%M)
-  tag_arch_time=$repo-tags:$arch-$tag_time
-  echo $tag_arch_time
-  docker tag $tag_arch $tag_arch_time
-  docker push $tag_arch_time
-  docker tag $tag_arch_time $tag_arch
-  docker push $tag_arch
-}