bitbucket pipeline with docker, how to add source dependencies from a git repo

Well, let me share with you my approach on that. I use GitLab CI, which I guess it might be similar.

In my repository, I have a rosinstall file including the packages that I need to build from source.

In my case, coscr.rosinstall looks like

- git:    local-name: ira_laser_tools    uri: https://github.com/iralabdisco/ira_laser_tools.git    version: master

Then in my .gitlab-ci.yml file, I handle it like that:

stages:  - build  - testimage: osrf/ros:melodic-desktop-fullbefore_script:  - apt-get update && apt-get upgrade -y  - apt-get install -y python-rosinstall python-rosinstall-generator python-wstool build-essential  - apt-get install -y alsa-utils  - apt-get clean  - mkdir -p ~/catkin_ws/srcbuild:  stage: build  script:    - cd ~/catkin_ws/src     - git clone https://gitlab.com/______/cs_monster.git    - cd ~/catkin_ws     - wstool init src src/cs_monster/coscr.rosinstall    - rosdep install --from-paths src --ignore-src -r -y    - catkin_make -DCMAKE_BUILD_TYPE=Release

You can see how I use rosdep to make the trick.As far as I remember it was working. Either way, I hope it can give you some hints.