f

.github/workflows/assets/linux.Dockerfile

@@ -7,6 +7,15 @@ FROM ubuntu:18.10
 # See: https://unofficial-builds.nodejs.org/download/release/
 ARG node_version="18.17.1"
 
+# This is required in order to use the Ubuntu package repositories for EOL Ubuntu versions:
+# https://help.ubuntu.com/community/EOLUpgrades#Update_sources.list
+RUN \
+  sed \
+    --in-place \
+    --regexp-extended \
+    --expression='s/archive.ubuntu.com|security.ubuntu.com/old-releases.ubuntu.com/g' \
+    "/etc/apt/sources.list"
+
 RUN \
   apt-get \
     --yes \