docs: hypernode-deploy: Add hypernode-deploy documentation for Bitbucket pipelines

Author: Jonathan Visser

docs/hypernode-deploy/pipelines/bitbucket-pipelines.md

@@ -1,3 +1,101 @@
 # Bitbucket Pipelines
 
-This article is currently work in progress!
+## Configuring deployment environments
+
+To start using Bitbucket Pipelines, we need to prepare the environments we want to deploy to.
+
+For example, these environments can be:
+
+- production
+- acceptance (or staging)
+- test
+
+### Configuring the production environment
+
+Hypernode Deploy will need a pair of SSH keys for authentication to the server.
+
+First, we generate an SSH keypair on the production server, copy the public key to the `~/.ssh/authorized_keys` file
+and encode the private key with base64. We'll use this base64-encoded private key later on.
+
+```console
+app@abc-example-magweb-cmbl:~$ ssh-keygen -t ed25519 -C bb-pipelines-deploy -f bb-pipelines-deploy -q -P ""
+app@abc-example-magweb-cmbl:~$ cat bb-pipelines-deploy.pub >> ~/.ssh/authorized_keys
+app@abc-example-magweb-cmbl:~$ cat bb-pipelines-deploy | base64 -w0  # encode the private key with base64
+LS0tLS1CRUdJTiBPUEVOU1NIIFBSSVZBVEUgS0VZLS0tLS0KYjNCbGJuTnphQzFyWlhrdGRqRUFBQUFBQkc1dmJtV...
+```
+
+Now go to your Bitbucket repository and enable Bitbucket pipelines being going to **Repository settings -> Pipelines -> Settings** and turn on **Enable Pipelines**.
+
+Now go to **Repository settings -> Pipelines -> Repository variables**.
+
+1. Create a new variable with name `SSH_PRIVATE_KEY`, mark this variable as Secured.
+2. Set the **Value** to the base64-encoded private key we generated earlier.
+3. Click **Add**.
+
+To add hosts to the Pipeline known hosts go to **Repository settings -> Pipelines -> SSH Keys**
+
+1. Set **Host address** to your hypernode instance (e.g. _appname.hypernode.io_)
+2. Click **Fetch** to fetch the hostname fingerprint
+3. Click **Add Host** to add host to known hosts
+4. Repeat this for all hosts the pipeline will connect to (for example production, staging)
+
+## Build
+
+Create the file `bitbucket-pipelines.yml` with the contents below.
+This workflow will be used in other workflows.
+
+```yaml
+image: quay.io/hypernode/deploy:3-php8.2-node18
+
+definition:
+  steps:
+    - step: &hypernode-build
+        name: Build
+       script:
+         - hypernode-deploy build
+       artifacts:
+         - build/**
+```
+
+````{note}
+Don't forget to set the specifications of the image to what your project needs. The same goes for the deploy steps.
+For example, if your project needs PHP 7.4 and Node.js 16, set the image to:
+```yaml
+jobs:
+  build:
+    container: quay.io/hypernode/deploy:3-php7.4-node16
+    ...
+```
+````
+
+## Deploy to production
+
+Add the following to the `bitbucket-pipelines.yml` file.
+
+```yaml
+pipelines:
+  # Deploy to production
+  master:
+    - step: *hypernode-build
+    - step:
+        name: Deploy to production
+        deployment: production
+        script:
+          - hypernode-deploy deploy production
+```
+
+## Deploy to acceptance
+
+If you have an acceptance (or staging) stage in your deployment flow, here's an example on how to deploy that.
+
+```yaml
+pipelines:
+  # Deploy to acceptance
+  acceptance: # acceptance/staging branch
+    - step: *hypernode-build
+    - step:
+        name: Deploy to staging
+        deployment: staging
+        script:
+          - hypernode-deploy deploy staging
+```