feat: add Pulumi support

Signed-off-by: David Flanagan <david@rawkode.com>

pkg/universe.dagger.io/x/david@rawkode.dev/pulumi/up.sh

@@ -0,0 +1,40 @@
+#!/usr/bin/env bash
+set -xeo pipefail
+
+if test -v PULUMI_CONFIG_PASSPHRASE || test -v PULUMI_CONFIG_PASSPHRASE_FILE; then
+  echo "PULUMI_CONFIG_PASSPHRASE is set, using a local login"
+  pulumi login --local
+fi
+
+# Using Pulumi SaaS
+# We need to check for an existing stack with the name
+# If it exists, refresh the config
+# If it doesn't, create the stack
+if test -v PULUMI_ACCESS_TOKEN; then
+  if (pulumi stack ls | grep -e "^${STACK_NAME}"); then
+    echo "Stack exists, let's refresh"
+    pulumi stack select ${PULUMI_STACK}
+    # Could be first deployment, so let's not worry about this failing
+    pulumi config refresh --force || true
+  else
+    echo "Stack does not exist, let's create"
+    pulumi stack init ${PULUMI_STACK}
+  fi
+else
+  # Not using Pulumi SaaS, relying on local stack files
+  if test -v PULUMI_STACK_CREATE && test ! -f Pulumi.${PULUMI_STACK}.yaml; then
+    pulumi stack init ${PULUMI_STACK}
+  fi
+fi
+
+case $PULUMI_RUNTIME in
+  nodejs)
+    npm install
+    ;;
+
+  *)
+    echo -n "unknown"
+    ;;
+esac
+
+pulumi up --stack ${PULUMI_STACK} --yes