ci: add path-based conditions to skip irrelevant builds

- Add path filters to build.yaml for push/PR events
- Add path filters to deploy.yaml for push events
- Only run workflows when Go code or build files change

Author: raeperd

.github/workflows/build.yaml

@@ -1,4 +1,20 @@
-on: [push]
+on:
+  push:
+    paths:
+      - '**/*.go'
+      - 'go.mod'
+      - 'go.sum'
+      - 'Makefile'
+      - 'Dockerfile'
+      - '.github/workflows/build.yaml'
+  pull_request:
+    paths:
+      - '**/*.go'
+      - 'go.mod'
+      - 'go.sum'
+      - 'Makefile'
+      - 'Dockerfile'
+      - '.github/workflows/build.yaml'
 
 jobs:
   build:

.github/workflows/deploy.yaml

@@ -4,6 +4,13 @@ on:
       - 'v*'
     branches:
       - main
+    paths:
+      - '**/*.go'
+      - 'go.mod'
+      - 'go.sum'
+      - 'Makefile'
+      - 'Dockerfile'
+      - '.github/workflows/deploy.yaml'
 
 env:
   REGISTRY_IMAGE: ghcr.io/raeperd/kickstart