Add legacy/Dockerfile

legacy/Dockerfile

@@ -0,0 +1,12 @@
+FROM quay.io/keycloak/keycloak:legacy
+
+USER root
+# Copy the CA certificate into the container
+COPY Ruff-CA.crt /tmp/Ruff-CA.crt
+
+# Import into the correct truststore
+RUN keytool -import -trustcacerts -alias Ruff-CA \
+    -file /tmp/Ruff-CA.crt \
+    -keystore /usr/lib/jvm/java-11-openjdk-11.0.16.1.1-1.el8_6.x86_64/lib/security/cacerts \
+    -storepass changeit -noprompt && \
+    rm /tmp/Ruff-CA.crt