[OTEL-2371] Document workarounds on failed OTLP ingestion pipelines i…

…n Agent

content/en/opentelemetry/interoperability/otlp_ingest_in_the_agent.md

@@ -98,6 +98,14 @@ OTLP logs ingestion on the Datadog Agent is disabled by default so that you don'
    - Set `DD_LOGS_ENABLED` to true.
    - Set `DD_OTLP_CONFIG_LOGS_ENABLED` to true.
 
+<div class="alert alert-warning">
+<strong>Note</strong>: Starting in Agent v7.61.0, the OTLP ingestion pipelines are impacted by a bug from the upstream dependencies. The bug appears as the OTLP ingestion pipelines fail to start in Docker environments with an error message like <code>Error running the OTLP ingest pipeline: failed to register process metrics: process does not exist</code>. While we are actively investigating this bug, there are a few workarounds to mitigate it:
+1. Set the environment variable <code>HOST_PROC</code> to <code>/proc</code> in your Agent Docker container.
+2. Remove <code>/proc/:/host/proc/:ro</code> from <code>volumes</code> in your Agent Docker container.
+3. Set <code>pid</code> to <code>host</code> in your Agent Docker container. 
+These workarounds can be done in either the <code>docker</code> command or in the Docker compose file.
+</div>
+
 [1]: /agent/docker/
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