diff --git a/ci_build_images/hashicorp.Dockerfile b/ci_build_images/hashicorp.Dockerfile
index f8a56ae4..5c48d7f1 100644
--- a/ci_build_images/hashicorp.Dockerfile
+++ b/ci_build_images/hashicorp.Dockerfile
@@ -2,13 +2,14 @@
 # INSTALL HASHICORP VAULT
 # USAGE: vault server -dev > /dev/null 2>&1 &
 
-RUN curl -fsSL https://apt.releases.hashicorp.com/gpg | gpg --dearmor -o /usr/share/keyrings/hashicorp-archive-keyring.gpg \
-&& echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/hashicorp-archive-keyring.gpg] \
-https://apt.releases.hashicorp.com $(lsb_release -cs) main" | tee /etc/apt/sources.list.d/hashicorp.list \
-&& apt-get update \
-&& apt-get -y install --no-install-recommends vault \
-&& setcap cap_ipc_lock=-ep "$(readlink -f "$(which vault)")" \
-&& apt-get clean
+RUN . /etc/os-release \
+    && curl -fsSL https://apt.releases.hashicorp.com/gpg | gpg --dearmor -o /usr/share/keyrings/hashicorp-archive-keyring.gpg \
+    && echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/hashicorp-archive-keyring.gpg] \
+    https://apt.releases.hashicorp.com $(lsb_release -cs) main" | tee /etc/apt/sources.list.d/hashicorp.list \
+    && apt-get update \
+    && apt-get -y install --no-install-recommends vault \
+    && setcap cap_ipc_lock=-ep "$(readlink -f "$(which vault)")" \
+    && apt-get clean
 
 # VAULT CONFIGURATION
 ENV VAULT_DEV_ROOT_TOKEN_ID='MTR'