Build failing randomly - usually related to in app permissions

[rellisdev]

My build is randomly failing a lot more often than it used to. I think I've narrowed it down to when there is a mismatch in permissions in my app (i.e a user doesn't have entity access but does have page access to something - something along those lines) the thing is, these aren't app errors, my app builds and runs fine but a button might not appear for the user, which is fine in app but it seems in the buildpack it doesn't like if that happens.

I can't ever really narrow down this issue, I just have to do some trial and error until I get a working folder that builds successfully. I've placed the docker logs below but it doesn't appear to be useful at all

Mendix version: 10.18.5
Java version: 21
buildpack version: 6.0.0

[+] Building 21.6s (10/13) docker:default
=> [internal] load .dockerignore 0.0s
=> => transferring context: 2B 0.0s
=> [internal] load build definition from Dockerfile 0.0s
=> => transferring dockerfile: 2.87kB 0.0s
=> [internal] load metadata for docker.io/library/mendix-rootfs:app 0.0s
=> [internal] load metadata for docker.io/library/mendix-rootfs:builder 0.0s
=> CACHED [builder 1/4] FROM docker.io/library/mendix-rootfs:builder 0.0s
=> [stage-1 1/4] FROM docker.io/library/mendix-rootfs:app 0.0s
=> [internal] load build context 1.7s
=> => transferring context: 115.58MB 1.7s
=> [builder 2/4] COPY project /opt/mendix/build 1.8s
=> [builder 3/4] COPY scripts/startup.py scripts/vcap_application.json /opt/mendix/build/ 0.0s
=> ERROR [builder 4/4] RUN mkdir -p /tmp/buildcache/bust /tmp/cf-deps /var/mendix/build /var/mendix/build/.local && chmod +rx /opt/mendix/buildpack/compila 18.0s

[builder 4/4] RUN mkdir -p /tmp/buildcache/bust /tmp/cf-deps /var/mendix/build /var/mendix/build/.local && chmod +rx /opt/mendix/buildpack/compilation.py /opt/mendix/buildpack/buildpack/stage.py /opt/mendix/build/startup.py && cd /opt/mendix/buildpack && ./compilation.py /opt/mendix/build /tmp/buildcache /tmp/cf-deps 0 && rm -fr /tmp/buildcache /tmp/javasdk /tmp/opt /tmp/downloads /opt/mendix/buildpack/compilation.py /var/mendix && ln -s /opt/mendix/.java /opt/mendix/build && chown -R 1001:0 /opt/mendix && chmod -R g=u /opt/mendix:
0.896 INFO: Mendix project compilation phase...
1.322 INFO: get_java_major_version : major_version - 21
1.323 INFO: Preflight check on Mendix version [10.18.5.65446] and stack [cflinuxfs4]...
1.323 INFO: Preflight check completed
7.753 INFO: checking is micrometer metrics enabled
7.753 INFO: checking is micrometer metrics enabled
7.753 INFO: Usage metering is NOT enabled
17.84 Traceback (most recent call last):
17.84 File "/opt/mendix/buildpack/lib/python3.11/site-packages/urllib3/connection.py", line 199, in _new_conn
17.85 sock = connection.create_connection(
17.85 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
17.85 File "/opt/mendix/buildpack/lib/python3.11/site-packages/urllib3/util/connection.py", line 60, in create_connection
17.85 for res in socket.getaddrinfo(host, port, family, socket.SOCK_STREAM):
17.85 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
17.85 File "/usr/lib64/python3.11/socket.py", line 962, in getaddrinfo
17.85 for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
17.85 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
17.85 socket.gaierror: [Errno -2] Name or service not known
17.85
17.85 The above exception was the direct cause of the following exception:
17.85
17.85 Traceback (most recent call last):
17.85 File "/opt/mendix/buildpack/lib/python3.11/site-packages/urllib3/connectionpool.py", line 789, in urlopen
17.85 response = self._make_request(
17.85 ^^^^^^^^^^^^^^^^^^^
17.85 File "/opt/mendix/buildpack/lib/python3.11/site-packages/urllib3/connectionpool.py", line 490, in _make_request
17.85 raise new_e
17.85 File "/opt/mendix/buildpack/lib/python3.11/site-packages/urllib3/connectionpool.py", line 466, in _make_request
17.85 self._validate_conn(conn)
17.85 File "/opt/mendix/buildpack/lib/python3.11/site-packages/urllib3/connectionpool.py", line 1095, in _validate_conn
17.85 conn.connect()
17.85 File "/opt/mendix/buildpack/lib/python3.11/site-packages/urllib3/connection.py", line 693, in connect
17.85 self.sock = sock = self._new_conn()
17.85 ^^^^^^^^^^^^^^^^
17.85 File "/opt/mendix/buildpack/lib/python3.11/site-packages/urllib3/connection.py", line 206, in _new_conn
17.85 raise NameResolutionError(self.host, self, e) from e
17.85 urllib3.exceptions.NameResolutionError: <urllib3.connection.HTTPSConnection object at 0x7ff5cb9dd590>: Failed to resolve 'cdn.mendix.com' ([Errno -2] Name or service not known)
17.85
17.85 The above exception was the direct cause of the following exception:
17.85
17.85 Traceback (most recent call last):
17.85 File "/opt/mendix/buildpack/lib/python3.11/site-packages/requests/adapters.py", line 667, in send
17.85 resp = conn.urlopen(
17.85 ^^^^^^^^^^^^^
17.85 File "/opt/mendix/buildpack/lib/python3.11/site-packages/urllib3/connectionpool.py", line 843, in urlopen
17.85 retries = retries.increment(
17.85 ^^^^^^^^^^^^^^^^^^
17.85 File "/opt/mendix/buildpack/lib/python3.11/site-packages/urllib3/util/retry.py", line 519, in increment
17.86 raise MaxRetryError(_pool, url, reason) from reason # type: ignore[arg-type]
17.86 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
17.86 urllib3.exceptions.MaxRetryError: HTTPSConnectionPool(host='cdn.mendix.com', port=443): Max retries exceeded with url: /runtime/mendix-10.18.5.65446.tar.gz (Caused by NameResolutionError("<urllib3.connection.HTTPSConnection object at 0x7ff5cb9dd590>: Failed to resolve 'cdn.mendix.com' ([Errno -2] Name or service not known)"))
17.86
17.86 During handling of the above exception, another exception occurred:
17.86
17.86 Traceback (most recent call last):
17.86 File "/opt/mendix/buildpack/./compilation.py", line 76, in
17.86 compilation_globals = call_buildpack_compilation()
17.86 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
17.86 File "/opt/mendix/buildpack/./compilation.py", line 61, in call_buildpack_compilation
17.86 return runpy.run_module("buildpack.stage", run_name="main")
17.86 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
17.86 File "", line 229, in run_module
17.86 File "", line 88, in _run_code
17.86 File "/opt/mendix/buildpack/buildpack/stage.py", line 211, in
17.86 runtime.stage(BUILDPACK_DIR, BUILD_DIR, CACHE_DIR)
17.86 File "/opt/mendix/buildpack/buildpack/core/runtime.py", line 71, in stage
17.86 resolve_runtime_dependency(buildpack_dir, build_path, cache_path)
17.86 File "/opt/mendix/buildpack/buildpack/core/runtime.py", line 89, in resolve_runtime_dependency
17.86 util.resolve_dependency(
17.86 File "/opt/mendix/buildpack/buildpack/util.py", line 332, in resolve_dependency
17.86 download(url, cached_location)
17.86 File "/opt/mendix/buildpack/buildpack/util.py", line 389, in download
17.86 response = requests.get(url, stream=True)
17.86 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
17.86 File "/opt/mendix/buildpack/lib/python3.11/site-packages/requests/api.py", line 73, in get
17.86 return request("get", url, params=params, **kwargs)
17.86 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
17.86 File "/opt/mendix/buildpack/lib/python3.11/site-packages/requests/api.py", line 59, in request
17.86 return session.request(method=method, url=url, **kwargs)
17.86 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
17.86 File "/opt/mendix/buildpack/lib/python3.11/site-packages/requests/sessions.py", line 589, in request
17.86 resp = self.send(prep, **send_kwargs)
17.86 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
17.86 File "/opt/mendix/buildpack/lib/python3.11/site-packages/requests/sessions.py", line 703, in send
17.86 r = adapter.send(request, **kwargs)
17.86 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
17.86 File "/opt/mendix/buildpack/lib/python3.11/site-packages/requests/adapters.py", line 700, in send
17.87 raise ConnectionError(e, request=request)
17.87 requests.exceptions.ConnectionError: HTTPSConnectionPool(host='cdn.mendix.com', port=443): Max retries exceeded with url: /runtime/mendix-10.18.5.65446.tar.gz (Caused by NameResolutionError("<urllib3.connection.HTTPSConnection object at 0x7ff5cb9dd590>: Failed to resolve 'cdn.mendix.com' ([Errno -2] Name or service not known)"))

---

Dockerfile:44

43 | # 8. Update permissions of /opt/mendix so that the app can run as a non-root user
44 | >>> RUN mkdir -p /tmp/buildcache/bust /tmp/cf-deps /var/mendix/build /var/mendix/build/.local &&
45 | >>> chmod +rx /opt/mendix/buildpack/compilation.py /opt/mendix/buildpack/buildpack/stage.py /opt/mendix/build/startup.py &&
46 | >>> cd /opt/mendix/buildpack &&
47 | >>> ./compilation.py /opt/mendix/build /tmp/buildcache /tmp/cf-deps 0 &&
48 | >>> rm -fr /tmp/buildcache /tmp/javasdk /tmp/opt /tmp/downloads /opt/mendix/buildpack/compilation.py /var/mendix &&
49 | >>> ln -s /opt/mendix/.java /opt/mendix/build &&
50 | >>> chown -R ${USER_UID}:0 /opt/mendix &&
51 | >>> chmod -R g=u /opt/mendix
52 |

ERROR: failed to solve: process "/bin/sh -c mkdir -p /tmp/buildcache/bust /tmp/cf-deps /var/mendix/build /var/mendix/build/.local && chmod +rx /opt/mendix/buildpack/compilation.py /opt/mendix/buildpack/buildpack/stage.py /opt/mendix/build/startup.py && cd /opt/mendix/buildpack && ./compilation.py /opt/mendix/build /tmp/buildcache /tmp/cf-deps 0 && rm -fr /tmp/buildcache /tmp/javasdk /tmp/opt /tmp/downloads /opt/mendix/buildpack/compilation.py /var/mendix && ln -s /opt/mendix/.java /opt/mendix/build && chown -R ${USER_UID}:0 /opt/mendix && chmod -R g=u /opt/mendix" did not complete successfully: exit code: 1
Error response from daemon: reference does not exist