devcontainer added

.devcontainer/devcontainer.json

@@ -0,0 +1,45 @@
+// For format details, see https://containers.dev/implementors/json_reference/
+{
+    "name": "Java Developer Container",
+    "build": {
+        "dockerfile": "../Dockerfile",
+        "target": "developer"
+    },
+    "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 user sockets folder
+        "-v${localEnv:XDG_RUNTIME_DIR}:${localEnv:XDG_RUNTIME_DIR}",
+        // add the docker socket environment variable to the container
+        "-e=DOCKER_HOST=${localEnv:DOCKER_HOST}"
+    ],
+    // Mount the parent as /workspaces so we can pip install peers as editable
+    "workspaceMount": "source=${localWorkspaceFolder}/..,target=/workspaces,type=bind",
+    // for rootless we must not to mess with user ids inside the container
+    "updateRemoteUserUID": false,
+    // for rootless we are root inside the container
+    "remoteUser": "root"
+}

Dockerfile

@@ -1,6 +1,41 @@
-FROM eclipse-temurin:17-jre
+# Stage 1: Development stage
+FROM eclipse-temurin:17-jdk AS developer
 
-# deployment unit
-COPY target/ChannelFinder-*.jar /channelfinder/ChannelFinder-*.jar
+ENV DOCKER=docker-27.3.1
 
+# Install Maven and Git for development purposes
+RUN apt-get update && \
+    apt-get install -y maven git && \
+    apt-get clean
+
+
+# install the docker ce cli binary
+RUN curl -O https://download.docker.com/linux/static/stable/x86_64/${DOCKER}.tgz && \
+    tar xvf ${DOCKER}.tgz && \
+    cp docker/docker /usr/bin && \
+    rm -r ${DOCKER}.tgz docker
+
+# Set the working directory for development
+WORKDIR /workspace
+
+# Optionally, start an interactive shell for development
+CMD ["/bin/bash"]
+
+# Stage 2: Build stage
+FROM developer as builder
+
+# Copy the application code from the developer workspace or local context
+COPY . /workspace
+WORKDIR /workspace
+
+# Run Maven to clean and build the application JAR
+RUN mvn clean install
+
+# Stage 3: Production deployment stage
+FROM eclipse-temurin:17-jre AS production
+
+# Copy only the built JAR from the builder stage
+COPY --from=builder /workspace/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"]