diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 1e4a764..c9114e5 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -2,7 +2,12 @@ name: "Test"
 
 on:
   workflow_dispatch:
+  pull_request:
   push:
+    branches: [master]
+
+env:
+  PRIVATE_IMAGE: "smashedr/alpine-private:latest" # amd64/arm64
 
 jobs:
   test:
@@ -14,24 +19,44 @@ jobs:
       - name: "Checkout"
         uses: actions/checkout@v4
 
-      - name: "Write YAML"
-        id: yaml-action
+      - name: "Write YAML Basic"
         uses: teunmooij/yaml@v1
         with:
-          data: '{"version":"3.8","services":{"alpine":{"image":"alpine","command":"tail -f /dev/null"}}}'
+          data: '{"version":"3.8","services":{"alpine":{"image":"alpine:latest","command":"tail -f /dev/null"}}}'
           to-file: "docker-compose.yaml"
 
-      - name: "Test Local Action"
-        id: test
+      - name: "Test Action Basic"
+        id: test1
         uses: ./
         with:
+          name: "test-stack"
+          file: "docker-compose.yaml"
           host: ${{ secrets.DOCKER_HOST }}
           port: ${{ secrets.DOCKER_PORT }}
           user: ${{ secrets.DOCKER_USER }}
           #pass: ${{ secrets.DOCKER_PASS }}
           ssh_key: "${{ secrets.DOCKER_SSH_KEY }}"
-          file: "docker-compose.yaml"
+
+      - name: "Write YAML Private"
+        uses: teunmooij/yaml@v1
+        with:
+          data: '{"version":"3.8","services":{"alpine":{"image":"${{ env.PRIVATE_IMAGE }}","command":"tail -f /dev/null"}}}'
+          to-file: "docker-compose.yaml"
+
+      - name: "Test Action Private"
+        id: test2
+        uses: ./
+        with:
           name: "test-stack"
+          file: "docker-compose.yaml"
+          host: ${{ secrets.DOCKER_HOST }}
+          port: ${{ secrets.DOCKER_PORT }}
+          user: ${{ secrets.DOCKER_USER }}
+          #pass: ${{ secrets.DOCKER_PASS }}
+          ssh_key: "${{ secrets.DOCKER_SSH_KEY }}"
+          #registry_host: "ghcr.io"
+          registry_user: ${{ vars.DOCKER_HUB_USER }}
+          registry_pass: ${{ secrets.DOCKER_HUB_PASS }}
 
   lint:
     name: "Lint"
diff --git a/.prettierrc.json b/.prettierrc.json
index 9872391..34dae84 100644
--- a/.prettierrc.json
+++ b/.prettierrc.json
@@ -4,15 +4,15 @@
   "singleQuote": true,
   "overrides": [
     {
-      "files": ["**/*.json", "**/*.yaml", "**/*.yml"],
+      "files": ["**/*.html", "**/*.yaml", "**/*.yml"],
       "options": {
         "singleQuote": false
       }
     },
     {
-      "files": ["**/*.json", "**/*.yaml", "**/*.yml"],
+      "files": ["**/*.js", "**/*.css", "**/*.scss"],
       "options": {
-        "tabWidth": 2
+        "tabWidth": 4
       }
     }
   ]
diff --git a/README.md b/README.md
index 05664a3..c123cf4 100644
--- a/README.md
+++ b/README.md
@@ -10,9 +10,12 @@
 # Docker Stack Deploy Action
 
 This action deploys a docker stack from a compose file to a remote docker host using SSH Password or Key File Authentication.
+You can also optionally authenticate against a private registry using a username and password.
 
 For more details see [action.yaml](action.yaml) and [src/main.sh](src/main.sh).
 
+_Portainer Users_: You can deploy directly to Portainer with: [cssnr/portainer-stack-deploy-action](https://github.com/cssnr/portainer-stack-deploy-action)
+
 - [Inputs](#Inputs)
 - [Examples](#Examples)
 - [Support](#Support)
@@ -20,29 +23,56 @@ For more details see [action.yaml](action.yaml) and [src/main.sh](src/main.sh).
 
 ## Inputs
 
-| input    | required | default               | description               |
-| -------- | -------- | --------------------- | ------------------------- |
-| host     | **Yes**  | -                     | Remote Docker hostname    |
-| port     | No       | `22`                  | Remote Docker port        |
-| user     | **Yes**  | -                     | Remote Docker username    |
-| pass     | No       | -                     | Remote Docker password \* |
-| ssh_key  | No       | -                     | Remote SSH Key file \*    |
-| file     | No       | `docker-compose.yaml` | Docker Compose file       |
-| name     | **Yes**  | -                     | Docker Stack name         |
-| env_file | No       | -                     | Docker Environment file   |
+| input         | required         | default               | description                       |
+| ------------- | ---------------- | --------------------- | --------------------------------- |
+| host          | **Yes**          | -                     | Remote Docker hostname            |
+| port          | No               | `22`                  | Remote Docker port                |
+| user          | **Yes**          | -                     | Remote Docker username            |
+| pass          | Not w/ `ssh_key` | -                     | Remote Docker password \*         |
+| ssh_key       | Not w/ `pass`    | -                     | Remote SSH Key file \*            |
+| file          | No               | `docker-compose.yaml` | Docker Compose file               |
+| name          | **Yes**          | -                     | Docker Stack name                 |
+| env_file      | No               | -                     | Docker Environment file           |
+| registry_auth | No               | -                     | Enable Registry Authentication \* |
+| registry_host | No               | -                     | Registry Authentication Host \*   |
+| registry_user | No               | -                     | Registry Authentication User \*   |
+| registry_pass | No               | -                     | Registry Authentication Pass \*   |
 
 **pass/ssh_key** - You must provide either a `pass` or `ssh_key`
 
+**registry_auth** - Set to `true` to deploy with `--with-registry-auth`
+
+**registry_host** - To run `docker login` on another registry, example: `ghcr.io`
+
+**registry_user/registry_pass** - Required to run `docker login` before stack deploy
+
 ```yaml
 - name: 'Docker Stack Deploy'
   uses: cssnr/stack-deploy-action@v1
   with:
+    name: 'stack-name'
+    file: 'docker-compose-swarm.yaml'
     host: ${{ secrets.DOCKER_HOST }}
     port: ${{ secrets.DOCKER_PORT }}
     user: ${{ secrets.DOCKER_USER }}
     pass: ${{ secrets.DOCKER_PASS }}
-    file: 'docker-compose-swarm.yaml'
+```
+
+Use `docker login` and enable `--with-registry-auth`
+
+```yaml
+- name: 'Docker Stack Deploy'
+  uses: cssnr/stack-deploy-action@v1
+  with:
     name: 'stack-name'
+    file: 'docker-compose-swarm.yaml'
+    host: ${{ secrets.DOCKER_HOST }}
+    port: ${{ secrets.DOCKER_PORT }}
+    user: ${{ secrets.DOCKER_USER }}
+    pass: ${{ secrets.DOCKER_PASS }}
+    registry_host: 'ghcr.io'
+    registry_user: ${{ vars.GHCR_USER }}
+    registry_pass: ${{ secrets.GHCR_PASS }}
 ```
 
 ## Examples
@@ -68,12 +98,12 @@ jobs:
       - name: 'Docker Stack Deploy'
         uses: cssnr/stack-deploy-action@v1
         with:
+          name: 'stack-name'
+          file: 'docker-compose-swarm.yaml'
           host: ${{ secrets.DOCKER_HOST }}
           port: ${{ secrets.DOCKER_PORT }}
           user: ${{ secrets.DOCKER_USER }}
           pass: ${{ secrets.DOCKER_PASS }}
-          file: 'docker-compose-swarm.yaml'
-          name: 'stack-name'
 ```
 
 Full Example
@@ -115,14 +145,14 @@ jobs:
           platforms: linux/amd64,linux/arm64
 
       - name: 'Docker Login'
-        uses: docker/login-action@v2
+        uses: docker/login-action@v3
         with:
           registry: $${{ env.REGISTRY }}
           username: ${{ secrets.GHCR_USER }}
           password: ${{ secrets.GHCR_PASS }}
 
       - name: 'Build and Push'
-        uses: docker/build-push-action@v4
+        uses: docker/build-push-action@v6
         with:
           context: .
           platforms: linux/amd64,linux/arm64
@@ -132,12 +162,12 @@ jobs:
       - name: 'Docker Stack Deploy'
         uses: cssnr/stack-deploy-action@v1
         with:
+          name: 'stack-name'
+          file: 'docker-compose-swarm.yaml'
           host: ${{ secrets.DOCKER_HOST }}
           port: ${{ secrets.DOCKER_PORT }}
           user: ${{ secrets.DOCKER_USER }}
           ssh_key: '${{ secrets.DOCKER_SSH_KEY }}'
-          file: 'docker-compose-swarm.yaml'
-          name: 'stack-name'
 ```
 
 # Support
@@ -165,6 +195,7 @@ Additionally, you can support other GitHub Actions I have published:
 - [Update JSON Value Action](https://github.com/cssnr/update-json-value-action)
 - [Parse Issue Form Action](https://github.com/cssnr/parse-issue-form-action)
 - [Mirror Repository Action](https://github.com/cssnr/mirror-repository-action)
+- [Stack Deploy Action](https://github.com/cssnr/stack-deploy-action)
 - [Portainer Stack Deploy](https://github.com/cssnr/portainer-stack-deploy-action)
 - [Mozilla Addon Update Action](https://github.com/cssnr/mozilla-addon-update-action)
 
diff --git a/action.yaml b/action.yaml
index 2fe36ad..787724a 100644
--- a/action.yaml
+++ b/action.yaml
@@ -1,5 +1,5 @@
 name: "Docker Stack Deploy"
-description: "Deploy a Docker Stack"
+description: "Deploy a Docker Stack to a Remote Host over SSH w/ Optional Registry Authentication"
 author: "Shane"
 branding:
   icon: "layers"
@@ -32,6 +32,18 @@ inputs:
   env_file:
     description: "Environment File"
     required: false
+  registry_auth:
+    description: "Enable Registry Auth"
+    required: false
+  registry_host:
+    description: "Registry Auth Hostname"
+    required: false
+  registry_user:
+    description: "Registry Auth Username"
+    required: false
+  registry_pass:
+    description: "Registry Auth Password"
+    required: false
 
 runs:
   using: "docker"
diff --git a/src/main.sh b/src/main.sh
index 32aa0df..63e2705 100644
--- a/src/main.sh
+++ b/src/main.sh
@@ -46,12 +46,14 @@ trap cleanup_trap EXIT HUP INT QUIT PIPE TERM
 echo -e "\u001b[36mVerifying Docker and Setting Context."
 ssh -p "${INPUT_PORT}" "${INPUT_USER}@${INPUT_HOST}" "docker info" > /dev/null
 
-docker context create remote --docker "host=ssh://${INPUT_USER}@${INPUT_HOST}:${INPUT_PORT}"
-docker context ls
+if ! docker context inspect remote >/dev/null 2>&1;then
+    docker context create remote --docker "host=ssh://${INPUT_USER}@${INPUT_HOST}:${INPUT_PORT}"
+fi
 docker context use remote
+docker context ls
 
 if [ -n "${INPUT_ENV_FILE}" ];then
-    echo -e "\u001b[36mSourcing Environment File: ${INPUT_ENV_FILE}"
+    echo -e "\u001b[36mSourcing Environment File: \u001b[37;1m${INPUT_ENV_FILE}"
     stat "${INPUT_ENV_FILE}"
     set -a
     # shellcheck disable=SC1090
@@ -60,5 +62,18 @@ if [ -n "${INPUT_ENV_FILE}" ];then
     # export ENV_FILE="${INPUT_ENV_FILE}"
 fi
 
+if [[ -n "${INPUT_REGISTRY_USER}" && -n "${INPUT_REGISTRY_PASS}" ]];then
+    echo -e "\u001b[36mLogging in to Registry: \u001b[37;1m${INPUT_REGISTRY_HOST:-Docker Hub}"
+    echo "${INPUT_REGISTRY_PASS}" |
+        docker login --username "${INPUT_REGISTRY_USER}" --password-stdin "${INPUT_REGISTRY_HOST}"
+    INPUT_REGISTRY_AUTH="true"
+fi
+
+EXTRA_ARGS=()
+if [[ -n "${INPUT_REGISTRY_AUTH}" ]];then
+    echo -e "Adding extra arg: --with-registry-auth"
+    EXTRA_ARGS+=("--with-registry-auth")
+fi
+
 echo -e "\u001b[36mDeploying Stack: \u001b[37;1m${INPUT_NAME}"
-docker stack deploy -c "${INPUT_FILE}" "${INPUT_NAME}"
+docker stack deploy -c "${INPUT_FILE}" "${INPUT_NAME}" "${EXTRA_ARGS[@]}"