diff --git a/.github/test/Dockerfile-alpine b/.github/test/Dockerfile-alpine
index 08fc8300..aab923b2 100644
--- a/.github/test/Dockerfile-alpine
+++ b/.github/test/Dockerfile-alpine
@@ -12,8 +12,10 @@ RUN \
     cargo \
     g++ \
     gcc \
+    jpeg-dev \
     libc-dev \
     libffi-dev \
+    libjpeg \
     libxslt-dev \
     make \
     openssl-dev \
diff --git a/.github/workflows/test-container-build.yml b/.github/workflows/test-container-build.yml
index ff453523..c6fd9efb 100644
--- a/.github/workflows/test-container-build.yml
+++ b/.github/workflows/test-container-build.yml
@@ -11,12 +11,14 @@ on:
       - requirements.txt
       - Dockerfile
       - .github/workflows/*
+      - .github/test/Dockerfile*
 
   pull_request:
     paths:
       - requirements.txt
       - Dockerfile
       - .github/workflows/*
+      - .github/test/Dockerfile*
 
   # Changes to requirements.txt packages and Dockerfile may or may not always be compatible with arm etc, so worth testing
   # @todo: some kind of path filter for requirements.txt and Dockerfile