fix: use 'docker' not 'docker-cli' (correct Alpine package name)

k8s/infra/forgejo-runner/Dockerfile.golang

@@ -7,7 +7,7 @@ USER root
 RUN apk update && apk add --no-cache \
       nodejs \
       npm \
-      docker-cli
+      docker
 
 # Verify installations
 RUN docker --version && node --version && git --version

k8s/infra/forgejo-runner/Dockerfile.node

@@ -5,7 +5,7 @@ USER root
 
 # Alpine uses apk, not apt-get
 RUN apk update && apk add --no-cache \
-      docker-cli \
+      docker \
       nodejs \
       npm
 

k8s/infra/forgejo-runner/Dockerfile.rust

@@ -8,7 +8,7 @@ RUN apk update && apk add --no-cache \
       nodejs \
       npm \
       curl \
-      docker-cli
+      docker
 
 # Install Rust (as root, skip verification for now)
 RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain stable || true