Add action.yml

action.yml

@@ -0,0 +1,56 @@
+name: 'Gitea SSH Command'
+description: 'Executes a shell command/script on a remote server via SSH on a custom port.'
+
+inputs:
+  private_key:
+    description: 'Private SSH Key'
+    required: true
+  command:
+    description: 'Shell command or multi-line script to run on the remote server'
+    required: true
+  host:
+    description: 'Remote server hostname or IP'
+    required: true
+  username:
+    description: 'SSH username'
+    required: true
+  port:
+    description: 'SSH port'
+    required: false
+    default: '22'
+
+runs:
+  using: "composite"
+  steps:
+    - name: Run SSH Command
+      shell: bash # Required for composite actions
+      env:
+        SSH_KEY: ${{ inputs.private_key }}
+        COMMAND: ${{ inputs.command }}
+        HOST: ${{ inputs.host }}
+        USERNAME: ${{ inputs.username }}
+        PORT: ${{ inputs.port }}
+      run: |
+        set -euo pipefail
+
+        # 1. Setup the SSH directory and private key
+        mkdir -p ~/.ssh
+        chmod 700 ~/.ssh
+        echo "$SSH_KEY" > ~/.ssh/ssh_command_key
+        chmod 600 ~/.ssh/ssh_command_key
+
+        # 2. Configure SSH for the custom port/user and bypass host key prompt
+        cat >> ~/.ssh/config <<EOF
+        Host $HOST
+          Port $PORT
+          User $USERNAME
+          IdentityFile ~/.ssh/ssh_command_key
+          StrictHostKeyChecking no
+        EOF
+
+        # 3. Run the command on the remote host, piped over stdin so multi-line
+        #    scripts and embedded quotes don't need any local shell-escaping.
+        #    Remote stdout/stderr stream straight into this step's log, and the
+        #    remote command's exit code becomes this step's exit code.
+        echo "Running command on $HOST..."
+        printf '%s\n' "$COMMAND" | ssh "$HOST" bash -s