feat: add platformsh config

.environment

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+#!/bin/bash
+# This script can be a starting point to convert
+# PLATFORM_RELATIONSHIPS into another environment variable
+# Many CMS systems use a DATABASE_URL to connect to the database
+# Feel free to use this as inspiration
+
+getRelationshipInfo() {
+    RELATIONSHIP_NAME="$1"
+    PROPERTY="$2"
+    JQ_STR="to_entries[] | select(.key==\"$RELATIONSHIP_NAME\") | .value[].$PROPERTY"
+    CMD="echo $PLATFORM_RELATIONSHIPS | base64 -d | jq -r '$JQ_STR'"
+    eval $CMD
+}
+
+# choose the name of the relationship to parse, feel free to alter this
+RELATIONSHIP="postgresdatabase"
+DB_DATABASE="main"
+
+# Extract the information we need
+DB_TYPE=$(getRelationshipInfo "$RELATIONSHIP" 'scheme')
+DB_USERNAME=$(getRelationshipInfo "$RELATIONSHIP" 'username')
+DB_HOST=$(getRelationshipInfo "$RELATIONSHIP" 'host')
+DB_PASS=$(getRelationshipInfo "$RELATIONSHIP" 'password')
+DB_PORT=$(getRelationshipInfo "$RELATIONSHIP" 'port')
+
+# Create your DATABASE_URL variable here
+export DATABASE_URL="postgresql://$DB_USERNAME:$DB_PASS@$DB_HOST:$DB_PORT/$DB_DATABASE"
+
+# So now we have postgresql://user:@db_mysql.internal:3306/main
+# echo "$DATABASE_URL" #only echo to test since it will expose the credentials

.platform.app.yaml

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+# The name of this app. Must be unique within a project.
+name: app
+
+# The runtime the application uses. The 'type' key defines the base container
+# image that will be used to run the application. There is a separate base
+# container image for each primary language for the application,
+# in multiple versions. Check the JavaScript/Node.js documentation
+# (https://docs.platform.sh/languages/nodejs.html#supported-versions)
+# to find the supported versions for the 'nodejs' type.
+type: 'nodejs:18'
+
+dependencies:
+    nodejs:
+        yarn: '*'
+
+build:
+    flavor: none
+
+hooks:
+    build: |
+        set -e
+        yarn install
+        yarn build
+    deploy: |
+        set -e
+        yarn update-db
+
+# The following block defines a single writable directory, 'web/uploads'
+# The 'source' specifies where the writable mount is. The 'local' source
+# indicates that the mount point will point to a local directory on the
+# application container. The 'source_path' specifies the subdirectory
+# from within the source that the mount should point at.
+mounts:
+    'web/uploads':
+        source: local
+        source_path: uploads
+
+# The size of the persistent disk of the application (in MB).
+disk: 2048
+
+resources:
+    base_memory: 256
+    memory_ratio: 128
+
+# The relationships of the application with services or other applications.
+#
+# The left-hand side is the name of the relationship as it will be exposed
+# to the application in the PLATFORM_RELATIONSHIPS variable. The right-hand
+# side is in the form '<service name>:<endpoint name>'.
+relationships:
+    postgresdatabase: 'dbpostgres:postgresql'
+
+web:
+    commands:
+        start: 'yarn start'

.platform/routes.yaml

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+"https://{default}/":
+    type: upstream
+    upstream: "app:http"
+
+"https://www.{default}/":
+    type: redirect
+    to: "https://{default}/"

.platform/services.yaml

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+# The name given to the PostgreSQL service (lowercase alphanumeric only).
+dbpostgres:
+    # The type of your service (postgresql), which uses the format
+    # 'type:version'. Be sure to consult the PostgreSQL documentation
+    # (https://docs.platform.sh/add-services/postgresql.html#supported-versions)
+    # when choosing a version. If you specify a version number which is not available,
+    # the CLI will return an error.
+    type: postgresql:15
+    # The disk attribute is the size of the persistent disk (in MB) allocated to the service.
+    disk: 2048