Update deploy workflow SSH setup

Author: Uriel Alonso

.github/workflows/deploy.yml

@@ -65,14 +65,24 @@ jobs:
           username: ${{ github.repository_owner }}
           password: ${{ secrets.GHCR_TOKEN }}
 
-      - name: Set up SSH key
+      - name: Set up SSH
         run: |
           mkdir -p ~/.ssh
           echo "${{ secrets.LIGHTSAIL_SSH_KEY }}" > ~/.ssh/lightsail_key
           chmod 600 ~/.ssh/lightsail_key
+
           ssh-keygen -R "${{ vars.LIGHTSAIL_HOST }}" || true
           ssh-keyscan -H "${{ vars.LIGHTSAIL_HOST }}" >> ~/.ssh/known_hosts
 
+          cat > ~/.ssh/config <<EOF
+          Host ${{ vars.LIGHTSAIL_HOST }}
+            User ubuntu
+            IdentityFile ~/.ssh/lightsail_key
+            IdentitiesOnly yes
+            StrictHostKeyChecking yes
+          EOF
+          chmod 600 ~/.ssh/config
+
       - name: Start ssh-agent
         run: |
           eval "$(ssh-agent -s)"

config/deploy.yml

@@ -29,4 +29,4 @@ env:
 ssh:
   user: ubuntu
   keys_only: true
-  config: false
+  config: true