[chore]add devcontainer

.devcontainer/devcontainer.json

@@ -0,0 +1,38 @@
+// For format details, see https://aka.ms/devcontainer.json. For config options, see the
+// README at: https://github.com/devcontainers/templates/tree/main/src/java
+{
+	"name": "Java",
+	// Or use a Dockerfile or Docker Compose file. More info: https://containers.dev/guide/dockerfile
+	"image": "mcr.microsoft.com/devcontainers/java:1-21-bullseye",
+	"features": {
+		"ghcr.io/devcontainers/features/java:1": {
+			"version": "none",
+			"installMaven": "true",
+			"installGradle": "false"
+		},
+		"ghcr.io/devcontainers/features/aws-cli:1": {},
+		"ghcr.io/devcontainers/features/docker-outside-of-docker:1": {}
+	},
+	"customizations": {
+		"vscode": {
+			"extensions": [
+				"Oracle.oracle-java",
+				"redhat.java",
+				"vscjava.vscode-maven"
+			]
+		}
+	},
+	// Use 'forwardPorts' to make a list of ports inside the container available locally.
+	// "forwardPorts": [],
+	// Use 'postCreateCommand' to run commands after the container is created.
+	"postCreateCommand": "sudo apt-get update && sudo apt-get install -y fontconfig libfontconfig1-dev fonts-liberation fonts-dejavu-core",
+	// Container environment variables for Java headless mode
+	"containerEnv": {
+		"JAVA_TOOL_OPTIONS": "-Djava.awt.headless=true -Dfile.encoding=UTF-8",
+		"MAVEN_OPTS": "-Djava.awt.headless=true -Xmx2g"
+	},
+	// Configure tool-specific properties.
+	// "customizations": {},
+	// Uncomment to connect as root instead. More info: https://aka.ms/dev-containers-non-root.
+	// "remoteUser": "root"
+}

.gitignore

@@ -42,5 +42,4 @@ target/
 # local
 .vscode/
 .DS_Store
-.devcontainer/
 .claude/