diff --git a/.eslintrc.js b/.eslintrc.js
index 0a7b0bbfa3..3c6634e03b 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -52,6 +52,7 @@ module.exports = {
     "no-process-exit": [0],
     "node/no-unsupported-features/es-syntax": [0],
     "node/shebang": [0],
+    "no-ex-assign": [0],
     "import/no-commonjs": [0],
     "import/no-dynamic-require": [0],
     "import/no-extraneous-dependencies": noExtraneousRule,
diff --git a/packages/kontinuous/src/build/builder.js b/packages/kontinuous/src/build/builder.js
index beb15f4d68..ddfa49bb51 100644
--- a/packages/kontinuous/src/build/builder.js
+++ b/packages/kontinuous/src/build/builder.js
@@ -17,10 +17,12 @@ const loadDependencies = require("./load-dependencies")
 
 module.exports = async (_options = {}) => {
   const config = ctx.require("config")
+  const logger = ctx.require("logger")
 
-  const { buildPath, buildProjectPath, workspaceKsPath } = config
+  logger.info("🌀 [LIFECYCLE]: pre-build")
+  // TODO:
 
-  const logger = ctx.require("logger")
+  const { buildPath, buildProjectPath, workspaceKsPath } = config
 
   if (await fs.pathExists(workspaceKsPath)) {
     await fs.copy(workspaceKsPath, buildProjectPath, {
@@ -77,6 +79,9 @@ module.exports = async (_options = {}) => {
 
   await debugManifests(manifests, values)
 
+  logger.info("🌀 [LIFECYCLE]: post-build")
+  // TODO:
+
   return {
     manifestsFile,
     manifests: manifestsDump,
diff --git a/packages/kontinuous/src/build/validate-manifests.js b/packages/kontinuous/src/build/validate-manifests.js
index e71e6b3c54..7ab021c299 100644
--- a/packages/kontinuous/src/build/validate-manifests.js
+++ b/packages/kontinuous/src/build/validate-manifests.js
@@ -17,5 +17,16 @@ module.exports = async (manifests) => {
   logger.info("🌀 [LIFECYCLE]: validators")
   const context = createContext({ type: "validators", ValidationError })
   const { buildProjectPath } = config
-  await pluginFunction(`${buildProjectPath}/validators`)(manifests, {}, context)
+  try {
+    await pluginFunction(`${buildProjectPath}/validators`)(
+      manifests,
+      {},
+      context
+    )
+  } catch (err) {
+    if (!(err instanceof ValidationError)) {
+      err = new ValidationError(err.message)
+    }
+    throw err
+  }
 }
diff --git a/plugins/contrib/deploy-sidecars/kontinuous-ui.js b/plugins/contrib/deploy-sidecars/kontinuous-ui.js
new file mode 100644
index 0000000000..758b4e8232
--- /dev/null
+++ b/plugins/contrib/deploy-sidecars/kontinuous-ui.js
@@ -0,0 +1,38 @@
+module.exports = async (options, { logger, utils, dryRun, ctx }) => {
+  if (dryRun) {
+    return
+  }
+
+  const eventsBucket = ctx.require("eventsBucket")
+  const abortController = ctx.require("abortController")
+
+  const waitingFor = []
+  eventsBucket.on("resource:created", ({ manifests }) => {
+    waitingFor.push(
+      new Promise(async (resolve, reject) => {
+        try {
+          // TODO push events
+          resolve(e)
+        } catch (e) {
+          reject(e)
+        }
+        // await
+      })
+    )
+  })
+
+  return new Promise(async (res, rej) => {
+    while (true) {
+      if (abortController.signal.aborted) {
+        try {
+          await Promise.all(...waitingFor)
+          res()
+        } catch (err) {
+          rej(err)
+        }
+        return
+      }
+      await sleep(1)
+    }
+  })
+}