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Francesco Ciulla Profile picture
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30 Jul, 8 tweets, 2 min read
Creating Content is not easy, and the reasons are many.

In about a year I have collected the most important BLOCKERS.
I have experienced all of them.

- Lack of time
- Lack of ideas
- Not feeling ready
- Fear of judgment

Here are my short answers to all of them:
/Thread
Lack of time 1/2

This has always been my favorite excuse.
If we really want to do something you will find the time.

If it ever happened to you, when you fall in love, suddenly you have a lot of free time.

If you really want to create some content, give it the right priority.
Lack of time 2/2

I wanted to start YouTube in 2010.

I released my first video on August 7, 2020.

I've posted 193 videos.

My "secret"? Many videos are of me talking to my friends or people I think are important to the tech world, and I'm really interested in their stories.
Lack of ideas

This is the most valid blocker.

Time is precious!

Don't create content just for creating content, but start from what you do every day and create content on that.

If you build wooden tables, create content on how to make tables.

I would probably watch it!
Not feeling ready

If you think about it, you will never be really ready 100%.

What you can do is start earlier, to have more time to understand your mistakes and improve.

You don't become a boxing champion without taking a punch

The earlier the better
Fear of judgment

This is the biggest blocker.

To be a content creator you need to have tough skin.

Be ready to be judged because it will surely happen.
Yes you will get bad comments.

But you should focus on the fact that you are helping someone.
This is what matters.
Hi, I'm Francesco, and contrary to what you might think I'm quite new in the world of content creation (a year and a half).

I love sharing what I do and what I know. if you found this useful, you can follow @FrancescoCiull4 and reshare the first tweet.

I got many DMs of people asking for my YouTube Channel. It's literally in my bio. 2 times 😅

But here it is again (Sorry for spam 🙏)
youtube.com/channel/UCBRxD…

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More from @FrancescoCiull4

Francesco Ciulla Profile picture
22 May
What are dangling images in Docker?

Probably if you worked with docker locally, it happened to see something like this using `docker images`

The dangling images are those ones with <none> as [Repository] and [Tag]

Ugly uh?

Let me explain what's going on: a list of docker images, with a lot of <none> <none> as repo
A dangling image is one that is not tagged and is not referenced by any container.

Why are they there?

Reasons could be different, but the most common case is when you build another image using the same tag

(Side note: don't build a production-ready image with the same tag)
To see just the dangling images on your system, you can use the command:

`docker images -f dangling=true`

what a good show, right? only images with <none> <none>
Read 5 tweets
Francesco Ciulla Profile picture
21 May
Lifecycle of Docker containers (Thread)

A diagram with some additional information below about the lifecycle of containers.

This is a simplified version, there are other commands (kill, ...) and other intermediate states

Let's see them:
docker create

Creates a new layer over an image with a writeable container.

It prepares it to run a specific command (the one specified in the Dockerfile)

Useful to set up a configuration so that it is ready to start when needed.

Status of the container: "CREATED"
docker start

Starts one (or more) container.

This command can either be used::
- To start a container just created with the docker create command
- To start a stopped container
Read 9 tweets
Francesco Ciulla Profile picture
20 May
I've dealt with a lot of negative comments in my life.

When I was a coach I got yelled at by people who didn't agree with my choices.

That's why IDGAF about a comment written by an anonymous user who hides behind a keyboard.

But someone does.

This thread could help you.
🧵 Image
1- Never take it personally:

Think they:

- had a bad day,
- just broke up,
- lost their job,
- got their car stolen
- their house went up in flames

But don't take this as a direct attack on you or your family.
2- Responding is usually more harmful than ignoring.

This does not mean that we must passively accept any accusation, but probably answering it will only fuel discussions.

Also, there are people who like to argue all day long.
That's their hobby.
Read 8 tweets
Francesco Ciulla Profile picture
19 May
Path to Learn Docker in 10 steps.

There are many resources online, many great ones even free to learn Docker

But what is the path to learning Docker from Zero, so you can choose your own videos/articles?

Here is the path I suggest in 10 steps.

Let's see them together:

...
1) Understanding WHAT it is and what it isn't, what are the building blocks of it

2) Understanding what containerization is and why it is so important. Differences Containers/Virtual Machines

3) Install Docker on your operating system and make sure it works (`docker info`)

...
4) Take a look at "Docker Hub" and make a bit of practice using one image there (eg Nginx) and understand the basic commands: start/stop/list containers.

5) Understand how the components are made and their configuration: commands inspect/exec/logs.

...
Read 7 tweets
Francesco Ciulla Profile picture
18 May
The Computer Science degree helped me find a great job.

But not in the way you can imagine.

I always thought that after graduating in Computer Science I would immediately work as a freelancer, looking for clients and working remotely.

This was my plan.

But it changed.

👇
A University professor contacted me telling me that there was the possibility of working for the European Space Agency.

I was a bit torn but in the end, also out of curiosity, I went to the interview.

Two days later I got a great offer.

The next day I was working there.
This was a deviation from my initial project, but I adapted to this opportunity.

After about 4 years, and after leaving my 9-5 Job.

I don't regret my choice, which has given me stability and experience in the space sector, which I continue to love.
Read 5 tweets
Francesco Ciulla Profile picture
18 May
docker exec

One of the most important CLI commands to debug/modify running containers on the Docker Host.

It runs a specific command in an already running container

Syntax:
docker exec [OPTIONS] <container_id> COMMAND [ARUMENTS...]

Example:
`docker exec 1234 echo "hi"`

...
Common options:

-d: Run in detached mode
-e: Set new environment variable
--env-file: use an external file for env variables
-i: Keep the Standard Input open
-t: pseudo Terminal (TTY)
-u: define a user for the command
-w: define a working dir inside the container

...
The most common use case:

Use the exec command to get inside a running container

Example:
`docker exec -it <container_id> bash`

This works for most of the containers running based on Linux images

...
Read 5 tweets

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