add dependabot updates for GitHub Actions, Go modules and Dockerfile

.github/dependabot.yml

@@ -0,0 +1,28 @@
+# To get started with Dependabot version updates, you'll need to specify which
+# package ecosystems to update and where the package manifests are located.
+# Please see the documentation for all configuration options:
+# https://docs.github.com/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file
+
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "monthly"
+    groups:
+      "GitHub Actions updates":
+        patterns:
+          - "*"
+  - package-ecosystem: "docker"
+    directory: "/"
+    schedule:
+      interval: "monthly"
+  - package-ecosystem: "gomod"
+    directory: "/"
+    schedule:
+      interval: "monthly"
+    groups:
+      "Go modules updates":
+        dependency-type: "production"
+      "Go modules updates for tests":
+        dependency-type: "development"

Dockerfile

@@ -4,9 +4,6 @@ ARG GIT_BRANCH
 ARG GITHUB_SHA
 ARG CI
 
-ENV GOFLAGS="-mod=vendor"
-ENV CGO_ENABLED=0
-
 ADD . /build
 WORKDIR /build
 
@@ -21,6 +18,10 @@ RUN \
 
 
 FROM ghcr.io/umputun/baseimage/app:v1.7.0
+
+# https://docs.github.com/en/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file#docker
+LABEL org.opencontainers.image.source="https://github.com/umputun/updater"
+
 RUN apk add docker openssh-client
 
 RUN \