Add readme

Dockerfile

@@ -18,22 +18,21 @@ LABEL org.opencontainers.image.created="${IMAGE_CREATED}" \
 	org.opencontainers.image.title="Gitea Actions runner images customised by Seeseemelk" \
 	org.opencontainers.image.description="Docker images used by act_runner to run workflows."
 
-RUN apt-get update && \
-	apt-get -y install gnupg2 openjdk-21-jre-headless
-
-RUN wget -O sonar.zip https://binaries.sonarsource.com/Distribution/sonar-scanner-cli/sonar-scanner-cli-6.1.0.4477.zip && \
+RUN wget -O sonar.zip https://binaries.sonarsource.com/Distribution/sonar-scanner-cli/sonar-scanner-cli-6.2.1.4610.zip && \
 	unzip sonar.zip && \
 	mkdir /sonar && \
 	mv sonar-scanner-*/* /sonar && \
 	rm -r sonar-scanner-* sonar.zip
+ENV PATH="$PATH:/sonar/bin"
 
-RUN pip3 install makelove
-
-RUN apt-get -y install luarocks && \
+RUN apt-get update && \
+	apt-get -y install \
+		gnupg2 openjdk-21-jre-headless \
+		luarocks \
+		cmake \
+		libsdl2-dev libsdl2-gfx-dev libsdl2-image-dev libsdl2-mixer-dev libsdl2-net-dev libsdl2-ttf-dev \
+		golang-1.23 && \
+	pip3 install makelove && \
 	luarocks install tl
 
-RUN apt-get -y install \
-	cmake \
-	libsdl2-dev libsdl2-gfx-dev libsdl2-image-dev libsdl2-mixer-dev libsdl2-net-dev libsdl2-ttf-dev
-
-ENV PATH="$PATH:/sonar/bin"
+ENV PATH="/usr/lib/go-1.23/bin/:$PATH"

README.md

@@ -0,0 +1,12 @@
+# Runner Images
+This contains the docker runner image used by the Gitea Action runner.
+
+## Updating the runner
+The runner will run from a cached version of the image.
+In order to use the new version, one has to obtain a shell in the runner container, and pull the image again.
+
+```sh
+ssh pi
+docker exec -it homeserver-gitea-runner-1 /bin/sh
+docker pull seeseemelk/runner-images:ubuntu-latest
+```