add release documentation

Signed-off-by: bupd <bupdprasanth@gmail.com>

.goreleaser.yaml

@@ -55,7 +55,7 @@ release:
   prerelease: auto            # Auto-detect prereleases based on tag
   disable: false              # Ensure release publishing is enabled
   github:
-    owner: bupd           # Your GitHub repository owner
+    owner: goharbor           # Your GitHub repository owner
     name: harbor-cli          # Your GitHub repository name
 
 changelog:

RELEASE.md

@@ -0,0 +1,102 @@
+## Overview
+
+This document provides a step-by-step guide for maintainers to create and publish a release for the project using GoReleaser. The release process is automated via GitHub Actions, and includes generating a changelog, signing the release, and pushing artifacts to the specified container registry.
+
+## Prerequisites
+
+Before creating a release, ensure the following:
+- You have **write access** to the repository.
+- The required **repository secrets** and **environment variables** are set.
+- You have **cosign** installed locally to generate the signing key-pair for release verification.
+
+---
+
+### 1. Set Up Cosign Key-Pair
+
+Before releasing, you need to generate a cosign key-pair (in local env) to sign the release.
+
+**Steps**:
+1. Install cosign (if not installed):
+   ```bash
+   cosign install
+   ```
+2. Generate a new cosign key-pair:
+   ```bash
+   cosign generate-key-pair
+   ```
+   This will generate two files:
+   - `cosign.key` (the private key)
+   - `cosign.pub` (the public key)
+
+3. Set the **private key** and **password** as GitHub repository secrets:
+   - **COSIGN_KEY**: Content of `cosign.key`
+   - **COSIGN_PASSWORD**: Password used to generate the key-pair
+
+   Navigate to **Settings > Secrets and Variables > Repository secrets** and add both secrets.
+
+---
+
+### 2. Configure GitHub Environments
+
+Next, create a new GitHub environment called **`production`** with the necessary secrets and variables for the release.
+
+#### Secrets for the Production Environment
+
+1. **REGISTRY_USERNAME**: The username for authenticating with the container registry.
+2. **REGISTRY_PASSWORD**: The password for authenticating with the container registry.
+
+**Steps**:
+- Go to **Settings > Environments**.
+- Click **Add environment** and name it `production`.
+- Add the secrets **REGISTRY_USERNAME** and **REGISTRY_PASSWORD** under the `production` environment.
+
+#### Environment Variables for the Production Environment
+
+1. **REGISTRY_ADDRESS**: The address of the registry (e.g., `registry.bupd.xyz`).
+2. **PUBLISH_ADDRESS**: The address to which the CLI artifacts will be published (e.g., `registry.bupd.xyz/harbor/cli`).
+
+**Steps**:
+- After adding secrets, add the following environment variables under `production`:
+  - **REGISTRY_ADDRESS**
+  - **PUBLISH_ADDRESS**
+
+---
+
+### 3. Create a GitHub Release
+
+Once the secrets and environment are set, follow these steps to create a release:
+
+1. Go to the **GitHub repository** and click on **Releases**.
+2. Click **Draft a new release**.
+3. In the **Tag version** field, specify the version number (e.g., `v0.2.0`).
+4. **Do not add a description**—the changelog will be generated automatically via GitHub Actions.
+5. Click **Publish Release**.
+
+Once the release is created, the GitHub Actions workflow will:
+- Generate the release changelog.
+- Sign the release using `cosign` (with the `COSIGN_KEY` and `COSIGN_PASSWORD`).
+- Push the CLI binaries to the container registry.
+
+---
+### 4. Verifying the Release
+
+Once the release is completed, you can verify it by:
+
+- Checking the GitHub Actions log for successful execution.
+- Pulling the image or artifact from the registry using:
+  ```bash
+  # example
+  docker pull registry.bupd.xyz/harbor/cli:v0.2.0
+  ```
+
+---
+
+### 5. Troubleshooting
+
+- **Missing GITHUB_TOKEN, GITLAB_TOKEN, or GITEA_TOKEN**:
+  Ensure the required environment variables are set in GitHub secrets and accessible to the workflow.
+
+- **Error Signing Release**:
+  Double-check that the `COSIGN_KEY` and `COSIGN_PASSWORD` secrets are correctly set in GitHub.
+
+---

dagger/main.go

@@ -149,7 +149,7 @@ func (m *HarborCli) PublishImage(
 	cosign_password := dag.SetSecret("cosign_password", cosignPassword)
 	regpassword := dag.SetSecret("reg_password", regPassword)
 
-  publisher := cli_runtime.WithRegistryAuth(regAddress, regUsername, regpassword)
+	publisher := cli_runtime.WithRegistryAuth(regAddress, regUsername, regpassword)
 	// Push the versioned tag
 	versionedAddress := fmt.Sprintf("%s:%s", publishAddress, tag)
 	addr, err := publisher.Publish(ctx, versionedAddress, dagger.ContainerPublishOpts{PlatformVariants: filteredBuilders})