GitHub actions (#15)

Testing using github actions to build r2r in foxy, galactic and rolling

.github/workflows/rust_and_ros2.yml

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+name: Rust
+
+on:
+  push:
+    branches: [ github_actions ]
+  pull_request:
+    branches: [ github_actions ]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  testing_rolling:
+    runs-on: ubuntu-latest
+    
+    steps:
+    - uses: actions/checkout@v2
+    - run: docker build . --file ./tests/Dockerfile --tag r2r_test
+    - run: docker run r2r_test
+    
+  testing_foxy:
+    runs-on: ubuntu-latest
+    
+    steps:
+    - uses: actions/checkout@v2
+    - run: docker build . --file ./tests/Dockerfile_foxy --tag r2r_test
+    - run: docker run r2r_test
+
+  testing_galactic:
+    runs-on: ubuntu-latest
+    
+    steps:
+    - uses: actions/checkout@v2
+    - run: docker build . --file ./tests/Dockerfile_galactic --tag r2r_test
+    - run: docker run r2r_test

tests/Dockerfile

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+FROM kristoferb/spdesktop_ros2:rolling
+
+COPY . /r2r
+RUN rm /bin/sh && ln -s /bin/bash /bin/sh
+RUN chmod +x /r2r/tests/test.sh
+ENTRYPOINT [ "/r2r/tests/test.sh" ]

tests/Dockerfile_foxy

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+FROM kristoferb/spdesktop_ros2:foxy
+
+COPY . /r2r
+RUN rm /bin/sh && ln -s /bin/bash /bin/sh
+RUN chmod +x /r2r/tests/test.sh
+ENTRYPOINT [ "/r2r/tests/test.sh" ]

tests/Dockerfile_galactic

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+FROM kristoferb/spdesktop_ros2:galactic
+
+COPY . /r2r
+RUN rm /bin/sh && ln -s /bin/bash /bin/sh
+RUN chmod +x /r2r/tests/test.sh
+ENTRYPOINT [ "/r2r/tests/test.sh" ]

tests/test.sh

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+#!/bin/bash
+
+source /opt/ros/rolling/setup.bash
+source /opt/ros/foxy/setup.bash
+source /opt/ros/galactic/setup.bash
+
+cd /r2r/
+/root/.cargo/bin/cargo test