Add GitHub Actions extension and install act in devcontainer setup

Author: tarteo

.devcontainer/devcontainer.json

@@ -14,7 +14,8 @@
             "extensions": [
                 "ms-azuretools.vscode-docker",
                 "redhat.vscode-yaml",
-                "ecmel.vscode-html-css"
+                "ecmel.vscode-html-css",
+                "github.vscode-github-actions"
             ]
        }
     },

.devcontainer/on-create.sh

@@ -23,3 +23,8 @@ git config pull.rebase true
 
 # Create config from template
 cat .devcontainer/odoo.cfg.tmpl | envsubst > odoo.cfg
+
+# Install act
+curl --proto '=https' --tlsv1.2 -sSf https://raw.githubusercontent.com/nektos/act/master/install.sh | bash
+mv ./bin/act /usr/local/bin/act
+rm -r ./bin/