add devspace files

Author: joaomlneto

.dockerignore

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+Dockerfile
+target/
+
+# Ignore .git folder
+.git

Dockerfile

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+################ Build & Dev ################
+# Build stage will be used:
+# - for building the application for production
+# - as target for development (see devspace.yaml)
+FROM maven:3.6.3-jdk-11 as build
+
+# Create project directory (workdir)
+WORKDIR /app
+
+# Install maven dependency packages
+COPY pom.xml .
+RUN mvn -T 1C install && rm -rf target
+
+# Add source code files to WORKDIR
+ADD . .
+
+# Build application
+RUN ./build.sh
+
+# Container start command for development
+# Allows DevSpace to restart the dev container
+# It is also possible to override this in devspace.yaml via images.*.cmd
+ENTRYPOINT ["./build.sh", "run"]
+
+
+################ Production ################
+# Creates a minimal image for production using distroless base image
+# More info here: https://github.com/GoogleContainerTools/distroless
+FROM gcr.io/distroless/java:11 as production
+
+# Copy application binary from build/dev stage to the distroless container
+COPY --from=build /app/target/main.jar /
+
+# Application port (optional)
+EXPOSE 8080
+
+# Container start command for production
+ENTRYPOINT ["/main.jar"]

build.sh

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+#!/bin/sh
+
+# Set maven build options
+MAVEN_OPTS="-XX:+TieredCompilation -XX:TieredStopAtLevel=1"
+
+# Remove old .jar files
+rm -f target/*.jar
+
+# Build jar file
+mvn package -T 1C -U -Dmaven.test.skip=true
+
+# Rename jar file
+cp target/*.jar target/main.jar
+
+# Start application if `run` argument is passed
+# XXX We change "java -jar" to "mvn spring-boot:run" to start the application.
+# XXX We also add the extra argument to force color.
+# XXX Spring boot doesn't color output automatically when running inside Kubernetes.
+if [ "$1" = "run" ]; then
+  #java -jar target/main.jar
+  mvn spring-boot:run -Dspring-boot.run.arguments="--spring.output.ansi.enabled=ALWAYS"
+fi

devspace.yaml

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+version: v1beta10
+
+# `images` specifies all images that may need to be built for this project
+images:
+  app: # This image is called `app` and this name `app` is referenced multiple times in the config below
+    image: joaomlneto/example-devspace-spring-boot
+    dockerfile: ./Dockerfile
+    injectRestartHelper: true
+    appendDockerfileInstructions:
+      - USER root
+    rebuildStrategy: ignoreContextChanges
+    build:
+      docker:
+        options:
+          target: build
+
+# `deployments` tells DevSpace how to deploy this project
+deployments:
+- name: example-devspace-spring-boot
+  # This deployment uses `helm` but you can also define `kubectl` deployments or kustomizations
+  helm:
+    # We are deploying the so-called Component Chart: https://devspace.sh/component-chart/docs
+    componentChart: true
+    # Under `values` we can define the values for this Helm chart used during `helm install/upgrade`
+    # You may also use `valuesFiles` to load values from files, e.g. valuesFiles: ["values.yaml"]
+    values:
+      containers:
+      - image: image(app):tag(app) # Use the `app` image (see `images`) and the tag DevSpace generates during image building in your Helm values
+      service:
+        ports:
+        - port: 8080
+
+# `dev` only applies when you run `devspace dev`
+dev:
+  # `dev.ports` specifies all ports that should be forwarded while `devspace dev` is running
+  # Port-forwarding lets you access your application via localhost on your local machine
+  ports:
+  - imageName: app # Select the Pod that runs our `app` image
+    forward:
+    - port: 8080
+
+  # `dev.open` tells DevSpace to open certain URLs as soon as they return HTTP status 200
+  # Since we configured port-forwarding, we can use a localhost address here to access our application
+  open:
+  - url: http://localhost:8080
+
+  # `dev.sync` configures a file sync between our Pods in k8s and your local project files
+  sync:
+  - imageName: app # Select the Pod that runs our `app` image
+    #disableDownload: true
+    excludePaths:
+    - .git/
+    uploadExcludePaths:
+    - Dockerfile
+    - target/
+    waitInitialSync: false
+    # XXX ATTENTION! This is a change from the defaults XXX
+    # Since Spring Boot devtools automatically reloads classes that were changed, instead of restarting
+    # the container, we simply have to recompile the classes!
+    onUpload:
+      execRemote:
+        command: mvn
+        args:
+          - compile
+
+  # `dev.terminal` tells DevSpace to open a terminal as a last step during `devspace dev`
+  terminal:
+    imageName: app
+    # With this optional `command` we can tell DevSpace to run a script when opening the terminal
+    # This is often useful to display help info for new users or perform initial tasks (e.g. installing dependencies)
+    # DevSpace has generated an example ./devspace_start.sh file in your local project - Feel free to customize it!
+    command:
+    - ./devspace_start.sh
+
+# `profiles` lets you modify the config above for different environments (e.g. dev vs production)
+profiles:
+  # This profile is called `production` and you can use it for example using: devspace deploy -p production
+  # We generally recommend to use the base config without any profiles as optimized for development (e.g. image build+push is disabled)
+- name: production
+  # This profile applies patches to the config above.
+  # In this case, it enables image building for example by removing the `disabled: true` statement for the image `app`
+  patches:
+  - op: remove
+    path: images.app.build.docker.options.target

devspace_start.sh

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+#!/bin/bash
+
+COLOR_CYAN="\033[0;36m"
+COLOR_RESET="\033[0m"
+
+echo -e "${COLOR_CYAN}
+   ____              ____
+  |  _ \  _____   __/ ___| _ __   __ _  ___ ___
+  | | | |/ _ \ \ / /\___ \| '_ \ / _\` |/ __/ _ \\
+  | |_| |  __/\ V /  ___) | |_) | (_| | (_|  __/
+  |____/ \___| \_/  |____/| .__/ \__,_|\___\___|
+                          |_|
+${COLOR_RESET}
+
+Welcome to your development container!
+This is how you can work with it:
+- ${COLOR_CYAN}Files will be synchronized${COLOR_RESET} between your local machine and this container
+- Certain files may be excluded from sync (see devspace.yaml)
+
+"
+
+bash