working on docker file sample 2

codershona · codershona · commit b8bb7e4e3158 · 2021-07-08T20:57:30.000Z
diff --git a/docker-2.md b/docker-2.md
@@ -130,17 +130,29 @@ docker image ls
 cd dockerfile-sample-1
 
 vim Dockerfile
+Or,
+nano Dockerfile
 ```
 
 ## Building Images: Running Docker Builds
+
+* Check the docker sample 1 file.
+
 ```
+Run: ll (LL small letter)
+
 docker image build -t customnginx .
 
 docker image ls
 
+vim Dockerfi le
+Or,
+nano Dockerfile
+
 docker image build -t customnginx .
 ```
 ## Building Images: Extending Official Images
+* Check the docker sample 2 file.
 ```
 cd dockerfile-sample-2
 
diff --git a/dockerfile-sample-2/Dockerfile b/dockerfile-sample-2/Dockerfile
@@ -0,0 +1,12 @@
+# this shows how we can extend/change an existing official image from Docker Hub
+
+FROM nginx:latest
+# highly recommend you always pin versions for anything beyond dev/learn
+
+WORKDIR /usr/share/nginx/html
+# change working directory to root of nginx webhost
+# using WORKDIR is preferred to using 'RUN cd /some/path'
+
+COPY index.html index.html
+
+# I don't have to specify EXPOSE or CMD because they're in my FROM
diff --git a/dockerfile-sample-2/index.html b/dockerfile-sample-2/index.html
@@ -0,0 +1,13 @@
+  <!Doctype html>
+<html lang="en">
+<head>
+  <meta charset="utf-8">
+
+  <title>This is our 2nd Sample Dockerfile worked and Building Images like Extending Official Images</title>
+
+</head>
+
+<body>
+  <h1>We had just successfully ran a container with a custom file copied into the image at build time!</h1>
+</body>
+</html>
