diff --git a/docker/templates/Dockerfile.erb b/docker/templates/Dockerfile.erb
index 3aa0deec452..26a7f036181 100644
--- a/docker/templates/Dockerfile.erb
+++ b/docker/templates/Dockerfile.erb
@@ -148,12 +148,26 @@ COPY config/pipelines.yml config/pipelines.yml
 COPY config/log4j2.properties config/
 COPY config/log4j2.file.properties config/
 COPY pipeline/default.conf pipeline/logstash.conf
+COPY env2yaml/env2yaml-amd64 env2yaml/
+COPY env2yaml/env2yaml-arm64 env2yaml/
+
 RUN chown --recursive logstash:root config/ pipeline/
 # Ensure Logstash gets the correct locale by default.
 ENV LANG=<%= locale %> LC_ALL=<%= locale %>
+
 # Copy over the appropriate env2yaml artifact
-ARG TARGETARCH
-COPY env2yaml/env2yaml-${TARGETARCH} /usr/local/bin/env2yaml
+RUN env2yamlarch="$(arch)"; \
+  case "${env2yamlarch}" in \
+    'x86_64') \
+      env2yamlarch=amd64; \
+      ;; \
+    'aarch64') \
+      env2yamlarch=arm64; \
+      ;; \
+    *) echo >&2 "error: unsupported architecture '$env2yamlarch'"; exit 1 ;; \
+  esac; \
+  cp env2yaml/env2yaml-${env2yamlarch} /usr/local/bin/env2yaml; \
+  rm -rf env2yaml
 # Place the startup wrapper script.
 COPY bin/docker-entrypoint /usr/local/bin/