Add disable_keyscan Option (#35)

Author: smashedr

README.md

@@ -4,16 +4,17 @@
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+[![Ko-fi](https://img.shields.io/badge/Ko--fi-72a5f2?logo=kofi&label=support)](https://ko-fi.com/cssnr)
 
 # Docker Stack Deploy Action
 
@@ -54,6 +55,7 @@ For more details see [action.yaml](action.yaml) and [src/main.sh](src/main.sh).
 | `user`               |     **Yes**      | -                                   | Remote Docker Username                    |
 | `pass`               |   or `ssh_key`   | -                                   | Remote Docker Password \*                 |
 | `ssh_key`            |    or `pass`     | -                                   | Remote SSH Key File \*                    |
+| `disable_keyscan`    |        -         | `false`                             | Disable SSH Key Scan: `ssh-keyscan` \*    |
 | `env_file`           |        -         | -                                   | Docker Environment File \*                |
 | `detach`**²**        |        -         | `true`                              | Detach Flag, `false`, to disable \*       |
 | `prune`**²**         |        -         | `false`                             | Prune Flag, `true`, to enable             |
@@ -96,6 +98,8 @@ If your hostname is behind a proxy like Cloudflare you will need to use the IP a
 
 **pass/ssh_key:** You must provide either a `pass` or `ssh_key`, not both.
 
+**disable_keyscan:** This will disable the `ssh-keyscan` command. Advanced use only.
+
 **env_file:** Variables in this file are exported before running stack deploy.
 To use a docker `env_file` specify it in your compose file and make it available in a previous step.
 If you need compose file templating this can also be done in a previous step.
@@ -502,12 +506,12 @@ For more information, see the CSSNR [SUPPORT.md](https://github.com/cssnr/.githu
 
 # Contributing
 
+If you would like to submit a PR, please review the [CONTRIBUTING.md](CONTRIBUTING.md).
+
 Please consider making a donation to support the development of this project
 and [additional](https://cssnr.com/) open source projects.
 
-[![Support](https://img.shields.io/badge/Ko--fi-579fbf?style=for-the-badge&logo=kofi&label=Support)](https://ko-fi.com/cssnr)
-
-If you would like to submit a PR, please review the [CONTRIBUTING.md](CONTRIBUTING.md).
+[![Ko-fi](https://ko-fi.com/img/githubbutton_sm.svg)](https://ko-fi.com/cssnr)
 
 Additionally, you can support other GitHub Actions I have published:
 
@@ -524,4 +528,4 @@ Additionally, you can support other GitHub Actions I have published:
 - [Package Changelog Action](https://github.com/cssnr/package-changelog-action?tab=readme-ov-file#readme)
 - [NPM Outdated Check Action](https://github.com/cssnr/npm-outdated-action?tab=readme-ov-file#readme)
 
-For a full list of current projects to support visit: [https://cssnr.github.io/](https://cssnr.github.io/)
+For a full list of current projects visit: [https://cssnr.github.io/](https://cssnr.github.io/)

action.yaml

@@ -37,6 +37,9 @@ inputs:
   ssh_key:
     description: "Remote SSH Key File"
     required: false
+  disable_keyscan:
+    description: "Disable SSH Key Scan"
+    required: false
   env_file:
     description: "Environment File"
     required: false

src/main.sh

@@ -3,7 +3,7 @@
 
 set -e
 
-# shellcheck disable=SC2317
+# shellcheck disable=SC2317,SC2329
 function cleanup_trap() {
     _ST="$?"
     if [[ -z "${INPUT_SSH_KEY}" ]];then
@@ -59,7 +59,11 @@ echo "Deploy Mode: ${INPUT_MODE}"
 
 mkdir -p "${SSH_DIR}" ~/.ssh
 chmod 0700 "${SSH_DIR}" ~/.ssh
-ssh-keyscan -p "${INPUT_PORT}" -H "${INPUT_HOST}" >> "${SSH_DIR}/known_hosts"
+
+if [[ "${INPUT_DISABLE_KEYSCAN}" != "true" ]];then
+    echo "Running: ssh-keyscan"
+    ssh-keyscan -p "${INPUT_PORT}" -H "${INPUT_HOST}" >> "${SSH_DIR}/known_hosts"
+fi
 echo "::endgroup::"
 
 ## Setup Authentication