envconfig | Golang library for managing configuration data | Configuration Management library

I see you are not using static files in your express app. You should add the static files to your express app and serve the pictures on your back-end server.

Basically you can have a look at this document.

Also if you prefer videos you can watch this video.

First of all, your backend file should be like;

ADD ./src . - that copies the contents of src to the current folder, stripping away the src part.

It should just be COPY . ./

Also note that it's not recommended to have a src subfolder in your source tree - the folder that contains go.mod is already the source tree.

See this

envconfig.Process() populates a given struct with values pulled from environment variables. Which environment variables are used can be specified with the envconfig struct tag.

For example:

You are mixing context here.

There are 3 contexts that you need to be aware of.

1. The observer that launches the Cloud Build process based on Git push.
2. The Cloud Build job is triggered by the observer, and it's executed on a sandboxed environment, it's a build process. A step/command fails in this step, because for this context you have not defined the ENV variables. When the build is finished, it places the image to GCR repository.
3. Then "the image" is taken and used by Cloud Run as a service, here you define the ENV variables for the service itself, for your application code and not for your build process.

In Context 2, you need to end up using substitution variables read more here and here.

Finally, I was able to get the index.js working properly! This is the code for anyone that need it (having this code in the index.js, it will search in all folders and put all models name files into const "model"

Use this code. The argument is a pointer to the expected value.

I managed to solve this problem 1 day after I posted this question. I forgot to share. The issue was about the cookies SameSite policy.

If you put strict value to SameSite. It will cause cookie loose if the you open the webpage from a link that is on another host.

From MDN:

Cookies will only be sent in a first-party context and not be sent along with requests initiated by third party websites.

More information can be found here: https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Set-Cookie/SameSite

You may notice that in Postman ContentType header's value is set to multipart/form-data.
Multipart requests combine one or more sets of data into a single body, separated by boundaries. You typically use these requests for file uploads and for transferring data of several types in a single request (for example, a file along with a JSON object).

So you need to use .uploadMultipart task to achieve it using Moya.
There is a code sample in Moya docs.