Update the container images for our GitLab CI pipeline.

Dockerfile.angular

@@ -1,3 +1,3 @@
-FROM alpine:latest
+FROM alpine:3.15
 
 RUN apk add chromium openssh-client xvfb-run yarn zip

Dockerfile.arch

@@ -1,4 +1,4 @@
-FROM archlinux/base
+FROM archlinux:base-20220130.0.46058
 ENV LANG C.UTF-8
 
 RUN pacman -Syyu --noconfirm git python qt5-multimedia qt5-svg qt5-webengine qt5-webchannel qt5-tools python-pyqt5 \

Dockerfile.debian

@@ -1,4 +1,4 @@
-FROM debian:unstable
+FROM debian:11
 
 RUN apt-get update && DEBIAN_FRONTEND=noninteractive \
     apt-get install -y python3 qttools5-dev-tools pyqt5-dev-tools python3-pyqt5 python3-pyqt5.qtmultimedia \

Dockerfile.documentation

@@ -1,3 +1,3 @@
-FROM alpine:latest
+FROM alpine:3.15
 
 RUN apk --no-cache add make py3-sphinx py3-sphinx_rtd_theme texlive-full

Dockerfile.fedora

@@ -1,4 +1,4 @@
-FROM fedora
+FROM fedora:35
 
 RUN dnf install -y https://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-$(rpm -E %fedora).noarch.rpm \
                    https://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-$(rpm -E %fedora).noarch.rpm

Dockerfile.ubuntu

@@ -1,4 +1,4 @@
-FROM ubuntu:rolling
+FROM ubuntu:21.10
 
 RUN apt-get update && DEBIAN_FRONTEND=noninteractive \
     apt-get install -y python3 qttools5-dev-tools pyqt5-dev-tools python3-pyqt5 python3-pyqt5.qtmultimedia \

README.rst

@@ -2,3 +2,10 @@ OpenLP Docker Runners
 =====================
 
 This repository holds the configuration to build the Docker runners for testing OpenLP.
+
+
+.. note::
+
+   The Dockerfiles contain version numbers to uniquely identify the release we're using. This helps us keep track of
+   which version of software we're using, as well as allow for us to periodically update the software without resorting
+   to tricks to work around our build process.