diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 958685d..7824b57 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,7 +16,7 @@ jobs:
         runs-on: ubuntu-latest
         steps:
             - name: Codesniffer
-              uses: pipeline-components/php-codesniffer@v0.32.1
+              uses: pipeline-components/php-codesniffer@v0.35.1
               with:
                   options: -s -p --colors --extensions=php --runtime-set testVersion 7.4
     php-codesniffer80:
@@ -24,7 +24,7 @@ jobs:
         runs-on: ubuntu-latest
         steps:
             - name: Codesniffer
-              uses: pipeline-components/php-codesniffer@v0.32.1
+              uses: pipeline-components/php-codesniffer@v0.35.1
               with:
                   options: -s -p --colors --extensions=php --runtime-set testVersion 8.0
     php-codesniffer81:
@@ -32,6 +32,6 @@ jobs:
         runs-on: ubuntu-latest
         steps:
             - name: Codesniffer
-              uses: pipeline-components/php-codesniffer@v0.32.1
+              uses: pipeline-components/php-codesniffer@v0.35.1
               with:
                   options: -s -p --colors --extensions=php --runtime-set testVersion 8.1
diff --git a/Dockerfile b/Dockerfile
index a3b3744..5f922fe 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -25,8 +25,11 @@ FROM node:20-alpine AS core
 RUN apk --no-cache add \
     git
 
-# Clone github.com/2pisoftware/cmfive-core
+# Set the default branch to clone
 ARG BUILT_IN_CORE_BRANCH=main
+# Invalidate the cache if the branch has changed
+ADD https://api.github.com/repos/2pisoftware/cmfive-core/git/refs/heads/$BUILT_IN_CORE_BRANCH /version.json
+# Clone github.com/2pisoftware/cmfive-core
 RUN git clone --depth 1 https://github.com/2pisoftware/cmfive-core.git -b $BUILT_IN_CORE_BRANCH
 
 # Get the repo metadata
@@ -45,7 +48,7 @@ RUN cd /cmfive-core/system/templates/base && \
 # This stage builds the final Cosine image
 
 # Use the Alpine Linux base image
-FROM alpine:3.19
+FROM alpine:3.19.4
 
 # PHP version
 # note: see Alpine packages for available versions