release: version 3.4.0

.github/workflows/cd.yml

@@ -14,13 +14,22 @@ jobs:
     - name: Extract dyndnsd version from tag name
       run: |
         echo "DYNDNSD_VERSION=${GITHUB_REF#refs/*/v}" >> $GITHUB_ENV
+
     # https://github.com/marketplace/actions/build-and-push-docker-images
-    - name: Build and push Docker image for dyndnsd ${{ env.DYNDNSD_VERSION }}
+    - name: Set up Docker Buildx
-      uses: docker/build-push-action@v1
+      uses: docker/setup-buildx-action@v1
+
+    - name: Login to Docker Hub
+      uses: docker/login-action@v1
       with:
         username: cmur2
         password: ${{ secrets.DOCKER_TOKEN }}
-        repository: cmur2/dyndnsd
+
-        path: docker
+    - name: Build and push Docker image for dyndnsd ${{ env.DYNDNSD_VERSION }}
-        build_args: DYNDNSD_VERSION=${{ env.DYNDNSD_VERSION }}
+      uses: docker/build-push-action@v2
-        tag_with_ref: true
+      with:
+        context: docker
+        build-args: |
+          DYNDNSD_VERSION=${{ env.DYNDNSD_VERSION }}
+        push: true
+        tags: cmur2/dyndnsd:v${{ env.DYNDNSD_VERSION }}

.github/workflows/ci.yml

@@ -30,3 +30,12 @@ jobs:
     - name: Lint and Test
       run: |
         bundle exec rake ci
+
+    # https://github.com/marketplace/actions/build-and-push-docker-images
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v1
+
+    - name: Test building Docker image for dyndnsd
+      uses: docker/build-push-action@v2
+      with:
+        context: docker

CHANGELOG.md

@@ -1,5 +1,23 @@
 # Changelog
 
+## 3.4.0 (April 2, 2021)
+
+IMPROVEMENTS:
+
+- **change** Docker image to run as non-root user `65534` by default, limits attack surface for security and gives OpenShift compatibility
+
+## 3.3.3 (April 1, 2021)
+
+OTHER:
+
+- update base of Docker image to Alpine 3.13.4 to fix security vulnerabilities
+
+## 3.3.2 (February 20, 2021)
+
+OTHER:
+
+- update to use `docker/build-push-action@v2` for releasing Docker image in GHA
+
 ## 3.3.1 (February 18, 2021)
 
 OTHER:

docker/Dockerfile

@@ -1,8 +1,8 @@
-FROM alpine:3.13.2
+FROM alpine:3.13.4
 
 EXPOSE 5353 8080
 
-ARG DYNDNSD_VERSION=3.3.1
+ARG DYNDNSD_VERSION=3.4.0
 
 RUN apk --no-cache add openssl ca-certificates && \
     apk --no-cache add ruby ruby-etc ruby-io-console ruby-json ruby-webrick && \
@@ -12,4 +12,10 @@ RUN apk --no-cache add openssl ca-certificates && \
     cp /usr/share/zoneinfo/Europe/Berlin /etc/localtime && \
     apk del .build-deps
 
+# Follow the principle of least privilege: run as unprivileged user.
+# Running as non-root enables running this image in platforms like OpenShift
+# that do not allow images running as root.
+# User ID 65534 is usually user 'nobody'.
+USER 65534
+
 ENTRYPOINT ["dyndnsd", "/etc/dyndnsd/config.yml"]

dyndnsd.gemspec

@@ -36,11 +36,11 @@ Gem::Specification.new do |s|
   s.add_runtime_dependency 'webrick', '>= 1.6.1'
 
   s.add_development_dependency 'bundler'
-  s.add_development_dependency 'bundler-audit', '~> 0.7.0'
+  s.add_development_dependency 'bundler-audit', '~> 0.8.0'
   s.add_development_dependency 'rack-test'
   s.add_development_dependency 'rake'
   s.add_development_dependency 'rspec'
-  s.add_development_dependency 'rubocop', '~> 1.10.0'
+  s.add_development_dependency 'rubocop', '~> 1.12.0'
   s.add_development_dependency 'rubocop-rake', '~> 0.5.1'
   s.add_development_dependency 'rubocop-rspec', '~> 2.2.0'
   s.add_development_dependency 'solargraph', '~> 0.40.0'

lib/dyndnsd/version.rb

@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Dyndnsd
-  VERSION = '3.3.1'
+  VERSION = '3.4.0'
 end