added devcontainer

Author: evshvarov

.devcontainer/devcontainer.json

@@ -0,0 +1,51 @@
+// For format details, see https://aka.ms/devcontainer.json. For config options, see the README at:
+// https://github.com/microsoft/vscode-dev-containers/tree/v0.224.2/containers/docker-existing-docker-compose
+{
+	"name": "objecscript-docker-template devcontainer",
+
+	// Use the same recipe as creates the container we use when working locally.
+	"dockerComposeFile": [
+		"../docker-compose.yml"
+	],
+
+	"service": "iris",
+
+	"workspaceFolder": "/irisrun/repo",
+
+	// This provides the elements of the connection object which require different values when connecting to the workspace within the container,
+	// versus those in .vscode/settings.json which apply when operating locally on the workspace files.
+	// We define and use a `server` so that (a) a user-level `objectscript.conn.server` properly doesn't override us, and (b) so InterSystems
+	// Server Manager can also be used.
+	"settings": {
+		"objectscript.conn" :{
+			"server": "devcontainer",
+			"active": true,
+		},
+		"intersystems.servers": {
+			"devcontainer": {
+				"username": "SuperUser",
+				"password": "SYS",
+				"webServer": {
+					"scheme": "http",
+					"host": "127.0.0.1",
+					"port": 52773
+				},
+			},
+		},
+		"python.defaultInterpreterPath":"/usr/irissys/bin/irispython"
+	},
+
+	// Add the IDs of extensions we want installed when the container is created.
+	// Currently (March 2022) `intersystems.language-server` fails to run within the container (alpine platform).
+	// Issue is probably https://github.com/intersystems/language-server/issues/185 and/or https://github.com/intersystems/language-server/issues/32
+	// Crash gets reported to the user, after which `intersystems-community.vscode-objectscript` falls back to
+	// using its TextMate grammar for code coloring.
+	"extensions": [
+		"ms-python.python",
+		"ms-python.vscode-pylance",
+		"intersystems-community.vscode-objectscript",
+        "intersystems.language-server",
+		"intersystems-community.servermanager",
+		"ms-vscode.docker"
+	],
+}