chore(docker): put browser deps instructions first

[yury-s]

The dependencies part should be common between language bindings and this way it should be easier to compare.

[mxschmitt]

Let's maybe also put the # 3. Symlink downloaded browsers for root user up or would it break since the folders does not exist yet?

[yury-s]

Let's maybe also put the # 3. Symlink downloaded browsers for root user up or would it break since the folders does not exist yet?

Yeah, it currently placed right after the instruction that creates the folder. I'm not fond of creating such link if the target directory won't be created. In any case we can change that in a separate PR, my main goal is to ensure that the Dockerfiles in language bindings have same prefix as currently the first RUN instruction will differ between typescript, python and java.