Building Your Container

Now that you have a Dockerfile, you can build it locally to make sure it is working properly.

From the same folder containing the Dockerfile, run the command:

$ docker build --tag shellhttpd:1.0 .

 Sending build context to Docker daemon  3.072kB
 Step 1/3 : FROM alpine
 latest: Pulling from library/alpine
 ba3557a56b15: Pull complete
 Digest: sha256:a75afd8b57e7f34e4dad8d65e2c7ba2e1975c795ce1ee22fa34f8cf46f96a3be
 Status: Downloaded newer image for alpine:latest
  ---> 28f6e2705743
 Step 2/3 : COPY httpd.sh /usr/local/bin/
  ---> 450c272c3201
 Step 3/3 : CMD ["/usr/local/bin/httpd.sh"]
  ---> Running in 92f5efa26f6e
 Removing intermediate container 92f5efa26f6e
  ---> a5984eb19baf
 Successfully built a5984eb19baf
 Successfully tagged shellhttpd:1.0

Next, start the container on your host PC:

$ docker run -d -p 8080:8080 --name shellhttpd shellhttpd:1.0

• -d - run the container in detached mode (in the background).

• -p 8080:8080 - map port 8080 of the host to port 8080 in the container.

• shellhttpd:1.0 - the image to use.

• --name - assigned a name to your container.

To test your container, open a browser window to http://127.0.0.1:8080/ or use the curl command:

$ curl 127.0.0.1:8080

 OK