[INT-1487] [INT-1913] CUPS image futureproofing

.github/workflows/build_cups_docker.yml

@@ -3,6 +3,7 @@ run-name: Building CUPS docker image and pushing it to GitHub registry
 on:
   push:
     branches:
+      - canary
       - master
     paths:
       - "cups/**"
@@ -19,6 +20,14 @@ jobs:
           registry: ghcr.io
           username: ${{ github.repository_owner }}
           password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Set image tag variable
+        id: vars
+        run: |
+          if [[ ${{ github.ref_name }} == "master" ]]; then
+            echo "TAG=latest" >> $GITHUB_OUTPUT
+          else
+            echo "TAG=${{ github.ref_name }}" >> $GITHUB_OUTPUT
+          fi
       - name: Set up Docker Buildx # Needed by docker/build-push-action@v6 
         uses: docker/setup-buildx-action@v3
       - name: Build and push
@@ -27,4 +36,4 @@ jobs:
           context: ./cups
           file: ./cups/Dockerfile
           push: true
-          tags: ghcr.io/sellpy/cups:latest
+          tags: ghcr.io/sellpy/cups:${{ steps.vars.outputs.TAG }}

cups/Dockerfile

@@ -1,30 +1,28 @@
-# lock version to 16.04 in order to not get a cups version that doesn't delete job data files.
-FROM ubuntu:16.04
-
-RUN apt-get clean && apt-get update && apt-get install -y locales
-
-# enable utf-8 locale
-RUN locale-gen en_US.UTF-8
-ENV LANG en_US.UTF-8
-ENV LANGUAGE en_US:en
-ENV LC_ALL en_US.UTF-8
-ENV LANG en_US.UTF-8
-
-ENV TERM xterm
-
-ADD install.sh /tmp/install.sh
-RUN sh -e /tmp/install.sh
-
-ENV TINI_VERSION v0.9.0
-ADD https://github.com/krallin/tini/releases/download/${TINI_VERSION}/tini /tini
-RUN chmod +rx /tini
-
-# install intermec drivers
+FROM ubuntu:24.04
+
+RUN apt-get update && apt-get install -y \
+  cups \
+  automake \
+  autoconf \
+  gcc \
+  ghostscript \
+  poppler-utils \
+  netpbm \
+  build-essential \
+  && apt-get clean
+
+# Enable utf-8 locale
+ENV LANG=C.UTF-8
+ENV LC_ALL=C.UTF-8
+
+# Used by driver build script
+ENV TERM=xterm
+
+# Install intermec drivers
 ADD drivers ./drivers
 RUN cd ./drivers && tar -zxvf cupsdriver-1.2-56.tar.gz && cd cupsdriver-1.2-56 && ./build.sh
 
 # Copy local configuration file to container
 COPY cupsd.conf /etc/cups/
 
-ENTRYPOINT ["/tini", "--"]
 CMD ["/usr/sbin/cupsd", "-f"]