use gci lint + install tools (#1691)

Author: tbavelier

.devcontainer/devcontainer.json

@@ -4,5 +4,22 @@
 		"ghcr.io/devcontainers/features/docker-outside-of-docker:1": {}
 	},
 	"runArgs": ["--name", "datadog-operator-devenv", "-w", "/workspaces/datadog-operator"],
-	"postStartCommand": ["git", "config", "--global", "--add", "safe.directory", "/workspaces/datadog-operator"]
+	"postStartCommand": "git config --global --add safe.directory /workspaces/datadog-operator && make install-tools",
+	"customizations": {
+        "vscode": {
+            "settings": {
+                "go.lintTool": "golangci-lint",
+                "go.lintOnSave": "package",
+                "go.lintFlags": [
+                    "--config=/workspaces/datadog-operator/.golangci.toml"
+                ],
+                "[go]": {
+                    "editor.formatOnSave": true
+                }
+            },
+            "extensions": [
+                "golang.Go"
+            ]
+        }
+    },
 }