Added error handling

Dockerfile

@@ -17,10 +17,26 @@ RUN dotnet publish ServiceUpdater.csproj \
 
 FROM debian:bookworm-slim AS final
 WORKDIR /app
-RUN apt-get update && apt-get install -y --no-install-recommends \
+RUN apt update && apt install --yes --no-install-recommends \
-    docker.io \
+    curl \
+    ca-certificates \
+    gnupg \
+    unzip \
+    dumb-init \
+    && install -m 0755 -d /etc/apt/keyrings \
+    && curl -fsSL https://download.docker.com/linux/debian/gpg | gpg --dearmor -o /etc/apt/keyrings/docker.gpg \
+    && chmod a+r /etc/apt/keyrings/docker.gpg \
+    && echo \
+         "deb [arch="$(dpkg --print-architecture)" signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/debian \
+         "$(. /etc/os-release && echo "$VERSION_CODENAME")" stable" | \
+         tee /etc/apt/sources.list.d/docker.list > /dev/null \
+    && apt update \
+    && apt --yes --no-install-recommends install \
+         docker-ce-cli \
+         docker-compose-plugin \
     && rm -rf /var/lib/apt/lists/*
 COPY --from=build /app/publish/ServiceUpdater /app
 COPY --from=build /app/publish/appsettings.json /app
 RUN chmod +x /app/ServiceUpdater
+ENV ASPNETCORE_URLS="http://0.0.0.0:5000"
 ENTRYPOINT ["/app/ServiceUpdater"]

UpdateWorker.cs

@@ -3,6 +3,9 @@
 namespace ServiceUpdater;
 
 public sealed class UpdateWorker(UpdaterConfig config) {
+
+    private int LastExitCode { get; set; }
+    
     public async IAsyncEnumerable<string> UpdateService(string serviceName) {
         yield return $"Starting update for {serviceName}";
 
@@ -10,13 +13,14 @@ public sealed class UpdateWorker(UpdaterConfig config) {
             yield return line;
         }
 
+        if (LastExitCode != 0)
+            yield break;
+
         yield return $"Downloaded changes for {serviceName}";
 
         await foreach (var line in RunProcess(serviceName, "compose up -d --remove-orphans")) {
             yield return line;
         }
-
-        yield return $"Successfully updated {serviceName}";
     }
 
     private async IAsyncEnumerable<string> RunProcess(string folder, string arguments) {
@@ -48,11 +52,12 @@ public sealed class UpdateWorker(UpdaterConfig config) {
             else {
                 var line = await error;
                 if (line == null) break;
-                yield return "[ERR] " + line;
+                yield return line;
                 error = process.StandardError.ReadLineAsync();
             }
         }
 
         await process.WaitForExitAsync();
+        LastExitCode = process.ExitCode;
     }
 }

action.yml

@@ -0,0 +1,16 @@
+name: "Call Service Updater"
+description: "Triggers the internal updater service via HTTP"
+author: "Leon Hoppe"
+
+inputs:
+  service:
+    description: "Name of the service to update"
+    required: true
+
+runs:
+  using: "composite"
+  steps:
+    - name: Call updater
+      shell: sh
+      run: |
+        curl -N "http://updater:5000/update/${{ inputs.service }}"