add dependabot updates for GitHub Actions and Go modules

.github/dependabot.yml

@@ -0,0 +1,24 @@
+# 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: "gomod"
+    directory: "/"
+    schedule:
+      interval: "monthly"
+    groups:
+      "Go modules updates":
+        dependency-type: "production"
+      "Go modules updates for tests":
+        dependency-type: "development"

Dockerfile

@@ -4,7 +4,6 @@ ARG GIT_BRANCH
 ARG GITHUB_SHA
 ARG CI
 
-ENV GOFLAGS="-mod=vendor"
 ENV CGO_ENABLED=0
 
 ADD . /build
@@ -19,6 +18,8 @@ RUN \
 
 
 FROM umputun/baseimage:app-latest
+# enables automatic changelog generation by tools like Dependabot
+LABEL org.opencontainers.image.source="https://github.com/umputun/rlb"
 COPY --from=build /build/rlb /srv/rlb
 EXPOSE 7070
 WORKDIR /srv