gh-819: Simplify devcontainer setup

[pnoltes]

This PR simplifies the devcontainer setup.

@rlenferink: Could you test if this setup also works for you?

This PR closes #819

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.45%. Comparing base (effe33a) to head (7b36859).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #820      +/-   ##
==========================================
- Coverage   91.50%   91.45%   -0.05%     
==========================================
  Files         235      235              
  Lines       28686    28686              
==========================================
- Hits        26248    26235      -13     
- Misses       2438     2451      +13     

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[rlenferink]

Good idea to simplify this! The current setup is not as easy as it should be for new (or existing) contributors.

I tested this on Fedora 43 with rootless podman and CLion 2025.3.

The first attempt on running this branch the container build fails with the following failure:

Unpacking gh (2.86.0) ...
Setting up gh (2.86.0) ...
/tmp/jb-devcontainer-features/ghcr.io-devcontainers-features-github-cli-1
COMMIT jb-devcontainer-apache_celix_dev_container
--> 9b5711e397e2
Successfully tagged localhost/jb-devcontainer-apache_celix_dev_container:latest
9b5711e397e252880285297a87cf831cb4cdf8a43c888bd8f1edc846315ae3ee
Creating container…
Container Id: 82f761ec4ae509cbd02c45d1a0acac202e271389a6e64c921c02d10c5d70ba09
Container name: '/youthful_gould'
Starting container '/youthful_gould'
Status 500: Status 500: {"cause":"no matching entries in passwd file","message":"unable to find user celixdev: no matching entries in passwd file","response":500}

It seems that the user celixdev cannot be found. After a quick check this seems to be correct, since the celixdev user is created in the conan-build stage and not in the conan-dev stage.

This might be an accidental error, so I tried changes the conan-dev stage to inherit from the conan-build stage instead by applying the following patch:

diff --git a/.devcontainer/Containerfile b/.devcontainer/Containerfile
index 21b3f8bfb..c4dc6c953 100644
--- a/.devcontainer/Containerfile
+++ b/.devcontainer/Containerfile
@@ -59,10 +59,12 @@ RUN pipx install conan && \
     sed -i 's/^build_type=.*/build_type=Release/' /home/${USERNAME}/.conan2/profiles/release && \
     sed -i 's/^build_type=.*/build_type=Debug/' /home/${USERNAME}/.conan2/profiles/debug
 
-FROM base as conan-dev
+FROM conan-build as conan-dev
 
+USER root
 RUN DEBIAN_FRONTEND="noninteractive" apt-get update && \
     DEBIAN_FRONTEND="noninteractive" apt-get install -y --no-install-recommends \
     gnupg2 dos2unix locales-all ssh rsync tar tzdata sudo vim cmake-curses-gui gdb \
     wget curl && \
-    apt-get clean \
+    apt-get clean
+USER ${USERNAME}

With that change CLion succesfully opens the celix project using the devcontainer approach.

After selecting the conan-debug profile, the project its auto-completion works and can successfully build, with a few warnings given:

====================[ Build | all | conan-debug ]===============================
/.jbdevcontainer/JetBrains/RemoteDev/dist/05b70c3c26068_CLion-2025.3.2/bin/cmake/linux/x64/bin/cmake --build /IdeaProjects/celix-container/build --target all -j 18
[421/1164] Linking CXX executable libs/utils/gtest/test_utilsd
/usr/bin/ld: warning: libs/utils/gtest/CMakeFiles/test_utils.dir/__/__/__/embed_zip_linux.s.o: missing .note.GNU-stack section implies executable stack
/usr/bin/ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker
[811/1164] Linking C shared library examples/celix-examples/services_example_c/libdynamic_consumer_exampled.so.1.0.0
/usr/bin/ld: warning: examples/celix-examples/services_example_c/CMakeFiles/dynamic_consumer_example.dir/src/dynamic_consumer_example.c.o: requires executable stack (because the .note.GNU-stack section is executable)
[1164/1164] Linking CXX executable deploy/ReadmeCxxExamplesContainer/ReadmeCxxExamplesContainerd

Build finished

Are these warnings expected?

Running All CTest results in the following:

The following tests FAILED:
	 12 - test_framework (Failed)
	 13 - test_framework_with_ei (Failed)
	 14 - test_framework_with_curl_ei (Failed)
	 15 - http_websocket_tests (Failed)
	 16 - test_log_helper (Failed)
	 17 - test_log_admin (Failed)
	 18 - test_syslog_writer (Failed)
	 19 - test_shell (Failed)
	 20 - test_cxx_shell (Failed)
	 21 - test_shell_tui (Failed)
	 22 - run_unit_test_rsa_common (Failed)
	 23 - test_rsa_utils (Failed)
	 24 - test_rsa_utils_ei (Failed)
	 25 - run_test_rsa_dfi_utils (Failed)
	 26 - run_integration_test_discovery_zeroconf (Failed)
	 27 - run_unit_test_discovery_zeroconf (Failed)
	 28 - run_test_tm_scoped (Failed)
	 29 - run_unit_test_tm (Failed)
	 30 - run_unit_test_tm_with_error_injection (Failed)
	 31 - run_test_rsa_dfi (Failed)
	 32 - run_integration_test_rsa_json_rpc (Failed)
	 33 - run_unit_test_rsa_json_rpc (Failed)
	 35 - run_integration_test_rsa_shm (Failed)
	 36 - run_unit_test_rsa_shm (Failed)
	 37 - test_cxx_remote_service_admin (Failed)
	 38 - test_cxx_rsa_configured_discovery (Failed)
Errors while running CTest
	 39 - test_cxx_remote_services_integration (Failed)
	 40 - test_components_ready (Failed)
	 41 - test_components_ready_with_ei (Failed)
Output from these tests are in: /IdeaProjects/celix-container/build/Testing/Temporary/LastTest.log
	 42 - run_integration_test_event_admin (Failed)
	 43 - run_unit_test_event_admin (Failed)
Use "--rerun-failed --output-on-failure" to re-run the failed cases verbosely.
	 44 - run_unit_test_event_admin_with_error_injection (Failed)
	 45 - run_integration_test_event_admin_remote_provider_mqtt (Failed)
	 46 - run_unit_test_event_admin_remote_provider_mqtt (Failed)
	 47 - run_unit_test_event_admin_remote_provider_mqtt_with_error_injection (Failed)
Process finished with exit code 8

Quickly scanning through the test output, it seems that every failing test fails with the following output:

12: Test command: /IdeaProjects/celix-container/build/libs/framework/gtest/test_frameworkd
12: Working Directory: /IdeaProjects/celix-container/build/libs/framework/gtest
12: Test timeout computed to be: 10000000
12: /IdeaProjects/celix-container/build/libs/framework/gtest/test_frameworkd: /lib/x86_64-linux-gnu/libcrypto.so.3: version `OPENSSL_3.4.0' not found (required by /home/celixdev/.conan2/p/b/libcu09ad2ef619b4f/p/lib/libcurl.so.4)
12: /IdeaProjects/celix-container/build/libs/framework/gtest/test_frameworkd: /lib/x86_64-linux-gnu/libssl.so.3: version `OPENSSL_3.2.0' not found (required by /home/celixdev/.conan2/p/b/libcu09ad2ef619b4f/p/lib/libcurl.so.4)
Failed

(the same is true when running the ctest --output-on-failure --test-dir build command in a terminal within CLion)

More info:

celixdev@ac8cda07f34b:/IdeaProjects/celix-container$ ldd build/bundles/event_admin/remote_provider/remote_provider_mqtt/gtest/unit_test_event_admin_remote_provider_mqtt_with_error_injectiond
build/bundles/event_admin/remote_provider/remote_provider_mqtt/gtest/unit_test_event_admin_remote_provider_mqtt_with_error_injectiond: /lib/x86_64-linux-gnu/libcrypto.so.3: version `OPENSSL_3.4.0' not found (required by /home/celixdev/.conan2/p/b/libcu09ad2ef619b4f/p/lib/libcurl.so.4)
build/bundles/event_admin/remote_provider/remote_provider_mqtt/gtest/unit_test_event_admin_remote_provider_mqtt_with_error_injectiond: /lib/x86_64-linux-gnu/libssl.so.3: version `OPENSSL_3.2.0' not found (required by /home/celixdev/.conan2/p/b/libcu09ad2ef619b4f/p/lib/libcurl.so.4)
        linux-vdso.so.1 (0x00007f8756a90000)
        libasan.so.8 => /lib/x86_64-linux-gnu/libasan.so.8 (0x00007f875592f000)
        libmosquitto.so.1 => /home/celixdev/.conan2/p/b/mosqubd83ff621e16a/p/lib/libmosquitto.so.1 (0x00007f8756a64000)
        libjansson.so.4 => /home/celixdev/.conan2/p/b/janss374a24077760d/p/lib/libjansson.so.4 (0x00007f8756a4e000)
        libuuid.so.1 => /home/celixdev/.conan2/p/b/util-c892553d99b97/p/lib/libuuid.so.1 (0x00007f8756a40000)
        libcelix_frameworkd.so.3 => /IdeaProjects/celix-container/build/libs/framework/libcelix_frameworkd.so.3 (0x00007f87557dd000)
        libcelix_utilsd.so.3 => /IdeaProjects/celix-container/build/libs/utils/libcelix_utilsd.so.3 (0x00007f8755715000)
        libuv.so.1 => /home/celixdev/.conan2/p/b/libuvf16e0e2de2b3a/p/lib/libuv.so.1 (0x00007f87569f9000)
        libgtest_maind.so => /home/celixdev/.conan2/p/b/gtest69153696c0e82/p/lib/libgtest_maind.so (0x00007f87569f4000)
        libgtestd.so => /home/celixdev/.conan2/p/b/gtest69153696c0e82/p/lib/libgtestd.so (0x00007f875561c000)
        libstdc++.so.6 => /lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f875539e000)
        libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f87552b5000)
        libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f87569c4000)
        libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f87550a3000)
        libssl.so.3 => /lib/x86_64-linux-gnu/libssl.so.3 (0x00007f8754ff9000)
        libcrypto.so.3 => /lib/x86_64-linux-gnu/libcrypto.so.3 (0x00007f8754ae5000)
        /lib64/ld-linux-x86-64.so.2 (0x00007f8756a92000)
        libcurl.so.4 => /home/celixdev/.conan2/p/b/libcu09ad2ef619b4f/p/lib/libcurl.so.4 (0x00007f875492c000)
        libzip.so.5 => /home/celixdev/.conan2/p/b/libzi76a9c0f1ba7ae/p/lib/libzip.so.5 (0x00007f8754600000)