Adds Dockerfile and info on how to build and test the image

rafariossaa · rafariossaa · commit c6b0a28b4710 · 2024-08-20T11:11:04.000+02:00
diff --git a/webapp/Dockerfile b/webapp/Dockerfile
@@ -0,0 +1,14 @@
+FROM docker.io/bitnami/node:22
+
+# Copy the app
+COPY app/ /app
+
+WORKDIR /app
+# Install depencencies (express)
+RUN npm install
+
+# Port to be exposed in the container
+EXPOSE 3000
+
+# Run the app
+CMD node app.js
diff --git a/webapp/README.md b/webapp/README.md
@@ -70,3 +70,30 @@ $ curl http://localhost:3000/
         </html>
 ```
 
+## Building the container image
+
+```bash
+$ docker build -t webapp:v0 .
+```
+
+### Testing the container image
+
+```bash
+$ docker run --name mywebapp --rm -p 3000:3000 -e WEBAPP_STRING='Hello world !!'  webapp:v0
+Server running on port 3000
+```
+
+```bash
+$ curl http://localhost:3000/
+
+        <html>
+            <head>
+                <title>Environment Variable and Server Hostname</title>
+            </head>
+            <body>
+                <p>WEBAPP_STRING Environment Variable: Hello world !!</p>
+                <p>Server Hostname: aa44cd3a60de</p>
+            </body>
+        </html>
+
+```
