diff --git a/Dockerfile b/Dockerfile
index b7f43b5c..43dc0c40 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,6 +6,10 @@ EXPOSE 80
 RUN apk update \
  && apk upgrade
 
+COPY certificates/adp_rootca.crt /usr/local/share/ca-certificates/adp_rootca.crt
+RUN chmod 644 /usr/local/share/ca-certificates/adp_rootca.crt \
+  && update-ca-certificates --fresh
+
 RUN apk add bash
 
 RUN apk add nginx \
diff --git a/certificates/adp_rootca.crt b/certificates/adp_rootca.crt
new file mode 100644
index 00000000..c786c3c8
--- /dev/null
+++ b/certificates/adp_rootca.crt
@@ -0,0 +1,31 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----