devcontainer added

.devcontainer/devcontainer.json

@@ -0,0 +1,42 @@
+// For format details, see https://containers.dev/implementors/json_reference/
+{
+    "name": "Java Developer Container",
+    "build": {
+        "dockerfile": "../Dockerfile",
+        "target": "developer"
+    },
+    "remoteEnv": {
+        // Allow X11 apps to run inside the container
+        "DISPLAY": "${localEnv:DISPLAY}"
+    },
+    "customizations": {
+        "vscode": {
+            // Set *default* container specific settings.json values on container create.
+            "settings": {},
+            // Add the IDs of extensions you want installed when the container is created.
+            "extensions": [
+                "ms-python.python",
+                "vscjava.vscode-java-pack",
+                "vmware.vscode-boot-dev-pack",
+                "github.vscode-github-actions",
+                "redhat.vscode-yaml",
+                "ms-azuretools.vscode-docker"
+            ]
+        }
+    },
+    "features": {
+        // Some default things like git config
+        "ghcr.io/devcontainers/features/common-utils:2": {
+            "upgradePackages": false
+        }
+    },
+    "runArgs": [
+        // Allow the container to access the host X11 display and EPICS CA
+        "--net=host",
+        // Make sure SELinux does not disable with access to host filesystems like tmp
+        "--security-opt=label=disable"
+    ],
+    // Mount the parent as /workspaces so we can pip install peers as editable
+    "workspaceMount": "source=${localWorkspaceFolder}/..,target=/workspaces,type=bind",
+    // After the container is created, install the python project in editable form
+}

Dockerfile

@@ -1,6 +1,27 @@
-FROM eclipse-temurin:17-jre
+# Stage 1: Development stage
+FROM eclipse-temurin:17-jdk AS developer
 
-# deployment unit
+# Install any development tools you need, for example, Maven, Git, etc.
+RUN apt-get update && \
+    apt-get install -y maven git && \
+    apt-get clean
+
+# Set the working directory for development
+WORKDIR /workspace
+
+# Optionally, you can clone or copy the source code if needed (e.g., for devcontainers)
+# If using a local dev environment, you might mount your code with volumes instead.
+# Example:
+# COPY . /workspace
+
+# Open a shell for interactive development
+CMD ["/bin/bash"]
+
+# Stage 2: Production deployment stage
+FROM eclipse-temurin:17-jre AS production
+
+# Copy the JAR from the build context
 COPY target/ChannelFinder-*.jar /channelfinder/ChannelFinder-*.jar
 
+# Set the CMD to run the application in production mode
 CMD ["java", "-jar", "/channelfinder/ChannelFinder-*.jar", "--spring.config.name=application"]