Java docker which is deployed to a function in deployment pipeline (through triggering)

examples/java-docker-buildspec-sample/.gitignore

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+.idea
+out
+target

examples/java-docker-buildspec-sample/Dockerfile

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+FROM openjdk:8-alpine
+COPY ./src/com/sample/HelloWorld.class /app/com/sample/HelloWorld.class
+WORKDIR /app
+ENTRYPOINT ["java", "com.sample.HelloWorld"]

examples/java-docker-buildspec-sample/README.md

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+# Build Spec File Example using Java and Docker
+
+This is an example Hello World project using Java SE JDK 11 and Docker. With the [OCI DevOps service](https://www.oracle.com/devops/devops-service/) and this project, you'll be able to build this application, build a Docker image and store it in [OCI Container Registry.](https://docs.oracle.com/en-us/iaas/Content/Registry/Concepts/registryoverview.htm)
+
+In this example, you'll build a container image of this Java Hello World app, and store your built container in the OCI Container Registry,  all using the OCI DevOps service!
+
+Let's go!
+
+## Building the application locally
+
+### Download the repo
+The first step to get started is to download the repository to your local workspace
+
+```shell
+git clone git@github.com:dlcbld/BuildSpecSampleFiles.git
+cd examples/java-docker-buildspec-sample
+```
+
+### Install and run the application
+
+1. Install Java SE SDK 11 on your system: https://java.com/en/download/help/download_options.html
+2. Compile the app: 
+
+   ```javac src/com/sample/HelloWorld.java```
+3. Run the app:
+
+    ```java src/com/sample/HelloWorld```
+4. To verify, make sure the string "Hello World" is printed in the shell.
+
+### Build a container image for the app
+You can locally build a container image using docker (or your favorite container image builder), to verify that you can run the app within a container.
+
+```
+docker build -t hello-world:1.0 .
+```
+
+Verify that your image was built, with `docker images`
+
+Next run your local container and confirm you can access the app running in the container
+```
+docker run --rm -d --name hello-world:latest
+```
+
+The string "Hello World" must be printed in the shell if your container has been built successfully.
+
+## Building the application in OCI DevOps
+Now that you've seen you can locally build this app, let's try this out through OCI DevOps Build service.
+
+### Create External Connection to your Git repository 
+
+1. Create a [DevOps Project](https://docs.oracle.com/en-us/iaas/Content/devops/using/devops_projects.htm) or use and an existing project. 
+2. In your DevOps project, create an External Connection to your GitHub repository which holds your application.
+   - Create a Personal Access Token (PAT): https://docs.github.com/en/github/authenticating-to-github/keeping-your-account-and-data-secure/creating-a-personal-access-token
+   - In the OCI Console, Go to Identity & Security -> Vault and create a [Vault]( https://docs.oracle.com/en-us/iaas/Content/KeyManagement/Concepts/keyoverview.htm) in compartment of your own choice.
+   - Create a Master Key that will be used to encrypt the PATs. 
+   - Select Secrets from under Resources and create a secret using PAT obtained from GitHub account.
+   - Make a note of the OCID of the secret.
+   - Now, go to the desired project and select External Connection from the resources.
+   - Select type as GitHub and provide OCID of the secret under Personal Access Token.
+   - Finally, allow BuildPipeline (dynamic group with DevOps Resources) to use a PAT secret by writing a policy in the root compartment as: ``` Allow dynamic-group dg-with-devops-resources to manage secret-family in tenancy```
+
+### Setup your Build Pipeline
+Create a new Build Pipeline to build, test and deliver artifacts from your GitHub Repository.
+
+### Managed Build stage
+In your Build Pipeline, first add a Managed Build stage
+1. The Build Spec File Path is the relative location in your repo of the build_spec.yaml . Leave the default, for this example.
+2. For the Primary Code Repository follow the below steps
+    - Select connection type as GitHub
+    - Select the external connection you created above
+    - Give the HTTPS URL to the repo which contains your application.
+    - Select main branch.
+
+### Create a Container Registry repository
+Create a [Container Registry repository](https://docs.oracle.com/en-us/iaas/Content/Registry/Tasks/registrycreatingarepository.htm) for the `hello-world` container image built in the Managed Build stage.
+1. You can name the repo: `java-docker-buildspec-sample-image`. So if you create the repository in the Ashburn region, the path is iad.ocir.io/TENANCY-NAMESPACE/java-docker-buildspec-sample-image
+2. Set the repository access to private for security reasons. You can add policies to manage access for the same.
+
+
+### Create a DevOps Artifact for your container image repository
+Reference :  https://docs.oracle.com/en-us/iaas/Content/devops/using/containerimage_repository_artifact.htm
+
+The version of the container image that will be delivered to the OCI repository is defined by a [parameter](https://docs.oracle.com/en-us/iaas/Content/devops/using/configuring_parameters.htm) in the Artifact URI that matches a Build Spec exported variable or Build Pipeline parameter name.
+
+Create a DevOps Artifact to point to the Container Registry repository location you just created above. Enter the information for the Artifact location:
+1. Name: `java-docker-buildspec-sample-artifact`
+1. Type: Container image repository
+1. Path: `REGION/TENANCY-OBJECT-STORAGE-NAMESPACE/java-docker-buildspec-sample-image`
+1. Replace parameters: Yes
+
+<img src="./assets/Create DevOps Artifact.png" />
+
+Required policies must be added in the root compartment for the Container Registry repository and DevOps Artifact resource.
+1. Provide access to OCIR to deliver artifacts : ```Allow dynamic-group dg-with-devops-resources to manage repos in tenancy```
+2. Provide access to read deploy artifacts in deliver artifact stage : ```Allow dynamic-group dg-with-devops-resources to manage devops-family in tenancy```
+
+### Add a Deliver Artifacts stage
+Let's add a **Deliver Artifacts** stage to your Build Pipeline to deliver the `java-docker-buildspec-sample` container image to an OCI repository.
+
+The Deliver Artifacts stage **maps** the ouput Artifacts from the Managed Build stage with the version to deliver to OCI Container Registry, through the DevOps Artifact Resource.
+
+Add a **Deliver Artifacts** stage to your Build Pipeline after the **Managed Build** stage. To configure this stage:
+1. In your Deliver Artifacts stage, choose `Select Artifact`
+   <img src="./assets/Final Details in Deliver Artifact Stage.png" />
+1. From the list of artifacts select the `java-docker-buildspec-sample-artifact` artifact that you created above
+   <img src="./assets/Selecting DevOps Artifact resource.png" />
+1. In the next section, you'll assign the  container image outputArtifact from the `build_spec.yaml` to the DevOps project artifact. For the "Build config/result Artifact name" enter: `hello_world_image`
+   <img src="./assets/Final Details in Deliver Artifact Stage.png" />
+
+
+### Run your Build in OCI DevOps
+
+#### From your Build Pipeline, choose `Manual Run`
+Use the Manual Run button to start a Build Run
+
+Manual Run will use the Primary Code Repository, will start the Build Pipeline, first running the Managed Build stage, followed by the Deliver Artifacts stage.
+
+After the Build Pipeline execution is complete, we can view the container image stored in the OCI Container Registry, which can then be pulled to local workspace (Under ```Actions``` , choose ``` Copy Pull Command```).
+
+

examples/java-docker-buildspec-sample/buildSpec.yml

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+version: 0.1
+component: build
+timeoutInSeconds: 20000
+runAs: root
+shell: bash
+steps:
+  - type: Command
+    name: "Build Hello World"
+    timeoutInSeconds: 10000
+    command: |
+      cd src/com/sample/
+      javac HelloWorld.java
+    onFailure:
+      - type: Command
+        command: |
+          echo "Building Hello World failed"
+        timeoutInSeconds: 1000
+        runAs: root
+  - type: Command
+    timeoutInSeconds: 10000
+    name: "Create Docker image"
+    command: |
+      docker build -t hello-world:1.0 .
+    onFailure:
+      - type: Command
+        command: |
+          echo "Creating Docker image failed"
+        timeoutInSeconds: 1000
+        runAs: root
+outputArtifacts:
+  - name: hello_world_image
+    type: DOCKER_IMAGE
+    location: hello-world:1.0

examples/java-docker-buildspec-sample/src/com/sample/HelloWorld.java

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+package com.sample;
+
+public class HelloWorld {
+
+    public static void main(String[] args) {
+        System.out.println("Hello World!");
+    }
+}

examples/java-docker-function-deploy/.gitignore

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+.idea
+out
+target

examples/java-docker-function-deploy/Dockerfile

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+FROM openjdk:8-alpine
+COPY ./src/com/sample/HelloWorld.class /app/com/sample/HelloWorld.class
+WORKDIR /app
+ENTRYPOINT ["java", "com.sample.HelloWorld"]