Update local and remote build

.github/workflows/main.yml

@@ -12,14 +12,16 @@ jobs:
     - name: Checkout code
       uses: actions/checkout@v2
 
-    - name: Build docker image
-      run: docker build -t dancer .
+    - name: Build environment
+      run: |
+        apt-get update                      && \
+        apt-get upgrade -y                  && \
+        apt-get install -y less wget        && \
+        apt-get install -y build-essential  && \
+        apt-get install -y libdancer-perl
 
     - name: Run docker image with entrypoint
-      run: docker run -d dancer
-
-    - name: Validate container
-      run: docker container ls
+      run: perl app.pl &
 
     - name: Run curl to ensure endpoint responds
       run: curl -i http://127.0.0.1:3000

Dockerfile

@@ -1,10 +1,9 @@
-FROM ubuntu:18.04
+FROM ubuntu:latest
 RUN apt-get update                      && \
     apt-get upgrade -y                  && \
     apt-get install -y less wget        && \
     apt-get install -y build-essential  && \
     apt-get install -y libdancer-perl
 COPY . /opt
 WORKDIR /opt
-EXPOSE 3000
 ENTRYPOINT [ "perl", "app.pl" ]

README.md

@@ -15,18 +15,22 @@ You can also run the below commands in a Gitpod instance without needing any con
 
 Build the image in Docker first: `docker build -t dancer .`
 
-Once image is built, you can sync the folder in and run it: `docker run --rm -it -p 3001:3000 -v $(pwd):/opt -w /opt dancer`
+Once image is built, you can sync the folder in and run it: `docker run -d -p 3000:3000 -v $(pwd):/opt -w /opt dancer`
 
-This will run the docker image and map the internal port 3000 to the port 3001 of the host system. It will also map the /opt directory of the container to the current directory of the host system.
+This will run the docker image and map the internal port 3000 to the port 3000 of the host system. It will also map the /opt directory of the container to the current directory of the host system.
 
-It will show you a prompt like this: `root@6e055fa48a34:/opt#`
+This will launch the Dancer application in the container and you can visit it from your desktop by browsing to: http://127.0.0.1:3000/
 
-You're ready to bootstrap the app with: `perl app.pl`
+## Continual work
 
-This will launch the Dancer application in the container and you can visit it from your desktop by browsing to: http://127.0.0.1:3001/
+Run `docker container ls` and you will see something like this:
 
-## Continual work
+```
+❯ docker container ls
+CONTAINER ID   IMAGE                                            COMMAND                  CREATED         STATUS         PORTS                                                                                    NAMES
+c0306495fc74   dancer                                           "perl app.pl"            4 seconds ago   Up 4 seconds   0.0.0.0:3000->3000/tcp, :::3000->3000/tcp                                                laughing_jemison
+```
 
-Use `ctrl-c` to stop serving content and `exit` to stop the container
+You can now stop your container by running `docker stop c0306495fc74`
 
-You can re-run the `docker run` command from above to resync the local folder and prepare to relaunch the app
+Update your code and rebuild your container with the build command, and re-run the container with your run command above.

app.pl

@@ -2,7 +2,7 @@
 use Dancer;
 
 get '/' => sub {
-    return "Dancer is responding inside Docker correctly";
+    return "Dancer is responding inside Docker container";
 };
 
 dance;