Merge pull request #137 from marcransome/dev-container-image-arg

Add image version arg for dev container and motd

.devcontainer/Dockerfile

@@ -1,4 +1,5 @@
-FROM rockylinux:9.2-minimal
+ARG BASE_IMAGE_VERSION=9.2-minimal
+FROM rockylinux:${BASE_IMAGE_VERSION}
 
 ENV TIMEZONE=Europe/London
 RUN ln -snf /usr/share/zoneinfo/$TIMEZONE /etc/localtime && \
@@ -15,7 +16,10 @@ RUN rm -rf /usr/share/doc
 
 RUN /usr/bin/fish -c "curl -sL https://raw.githubusercontent.com/jorgebucaran/fisher/main/functions/fisher.fish | source; and fisher install jorgebucaran/{fisher,fishtape}"
 
+ARG BASE_IMAGE_VERSION
 COPY motd /etc/motd
+RUN sed -i "s/{{BASE_IMAGE_VERSION}}/$BASE_IMAGE_VERSION/" /etc/motd
+
 COPY fish_greeting.fish /root/.config/fish/functions
 
 ENTRYPOINT ["/usr/bin/fish"]

.devcontainer/motd

@@ -1,7 +1,7 @@
 
 ░▄▀▀▄░▄▀▀▄░█▀▀▄░█▀▄
 ░█▄▄█░█░░█░█░▒█░█░█  dev container
-░█░░░░░▀▀░░▀░░▀░▀▀░  rockylinux:9.1-minimal
+░█░░░░░▀▀░░▀░░▀░▀▀░  rockylinux:{{BASE_IMAGE_VERSION}}
 
  - See CONTRIBUTING.md and CODE_OF_CONDUCT.md before contributing changes
    to the project

README.md

@@ -316,7 +316,7 @@ The project sources will be mounted at `/workspaces/pond`, and the container wil
 ```
 ░▄▀▀▄░▄▀▀▄░█▀▀▄░█▀▄
 ░█▄▄█░█░░█░█░▒█░█░█  dev container
-░█░░░░░▀▀░░▀░░▀░▀▀░  rockylinux:9.0-minimal
+░█░░░░░▀▀░░▀░░▀░▀▀░  rockylinux:9.2-minimal
 
  - See CONTRIBUTING.md and CODE_OF_CONDUCT.md before contributing changes
    to the project