Rahmanansii patch 1

examples/RandomImageWebApp.java

@@ -0,0 +1,51 @@
+import org.eclipse.jetty.server.Server;
+import org.eclipse.jetty.servlet.DefaultServlet;
+import org.eclipse.jetty.servlet.ServletContextHandler;
+import javax.servlet.http.*;
+import javax.servlet.ServletException;
+import java.io.*;
+import java.util.Random;
+
+public class RandomImageWebApp extends HttpServlet {
+    private String[] imagePaths = {
+        "images/image1.jpg",
+        "images/image2.jpg",
+        "images/image3.jpg"
+    };
+
+    @Override
+    protected void doGet(HttpServletRequest req, HttpServletResponse resp)
+            throws ServletException, IOException {
+        Random rand = new Random();
+        int index = rand.nextInt(imagePaths.length);
+        File file = new File(imagePaths[index]);
+
+        resp.setContentType("image/jpeg");
+        resp.setHeader("Content-Disposition", "inline");
+
+        try (OutputStream out = resp.getOutputStream();
+             FileInputStream in = new FileInputStream(file)) {
+            byte[] buffer = new byte[4096];
+            int bytesRead;
+            while ((bytesRead = in.read(buffer)) != -1) {
+                out.write(buffer, 0, bytesRead);
+            }
+        }
+    }
+
+    public static void main(String[] args) throws Exception {
+        Server server = new Server(8000);
+
+        ServletContextHandler handler = new ServletContextHandler();
+        handler.setContextPath("/");
+
+        handler.addServlet(RandomImageWebApp.class, "/image");
+        handler.addServlet(DefaultServlet.class, "/");
+
+        handler.setResourceBase(".");
+
+        server.setHandler(handler);
+        server.start();
+        server.join();
+    }
+}

examples/golang-multi-stage-docker-build/Dockerfile

@@ -16,7 +16,9 @@ RUN CGO_ENABLED=0 go build -o /app .
 # HERE STARTS THE MAGIC OF MULTI STAGE BUILD
 ############################################
 
-FROM scratch
+
+FROM openjdk:11-jre-slim
+COPY --from=build /app /app
 
 # Copy the compiled binary from the build stage
 COPY --from=build /app /app

examples/python-web-app/Dockerfile

@@ -6,9 +6,10 @@ COPY requirements.txt /app
 COPY devops /app
 
 RUN apt-get update && \
-    apt-get install -y python3 python3-pip && \
-    pip install -r requirements.txt && \
-    cd devops
+    apt-get install -y python3 python3-pip python3-venv && \
+    python3 -m venv /app/venv && \
+    . /app/venv/bin/activate && \
+    pip install -r requirements.txt
 
 ENTRYPOINT ["python3"]
 CMD ["manage.py", "runserver", "0.0.0.0:8000"]