message: Added troubleshooting section to installation guide
diff: @@ -121,3 +121,50 @@ You can retrieve from known offset.
  ```
  flvd consume message -o 0
  ```
  +
  +## Troubleshooting
  +This guide helps users to solve issues they might face during the setup process.
  +
  +###### Cross-compilation errors
  +
  +If you face cross-compilation errors while creating minikube image, for example
  +
  +```
  +cargo build --bin spu-server --target x86_64-unknown-linux-musl
  +error: linker `x86_64-linux-musl-gcc` not found
  + |
  + = note: No such file or directory (os error 2)
  +error: aborting due to previous error
  +error: could not compile `flv-spu`.
  +```
  +This is indicative that you need to add standard library for the target platform:
  +
  +```
  +rustup target add x86_64-unknown-linux-musl
  +```
  +
  +If it still doesn't work
  +
  +```
  +brew install filosottile/musl-cross/musl-cross
  +```
  +
  +Make sure you set the following environment variable
  +
  +```
  +export TARGET_CC=x86_64-linux-musl-gcc
  +```
  +
  +###### Connection issues
  +
  +If you face issues while connecting to the registry
  +
  +```
  +Get http://localhost:5000/v2/: dial tcp [::1]:5000: connect: connection refused
  +```
  +
  +It means your docker registry is not running
  +
  +```
  +docker run -d -p 5000:5000 --restart=always --name registry registry:2
  +```
  