install kubeseal

Dockerfile

@@ -6,3 +6,13 @@ RUN yum install -y jq && \
     yum clean all && \
     rm -rf /var/cache/yum
 COPY --from=kubectl /opt/bitnami/kubectl/bin/kubectl /usr/local/bin/kubectl
+
+# Install kubeseal
+ENV KUBESEAL_VERSION=0.19.5 \
+    KUBESEAL_CHECKSUM=9f8de35b8272533cc687c909ce717d4340aea23a16a3e422a92a6105f23b835b
+RUN curl -jksSL -o kubeseal.tgz https://github.com/bitnami-labs/sealed-secrets/releases/download/v${KUBESEAL_VERSION}/kubeseal-${KUBESEAL_VERSION}-linux-amd64.tar.gz && \
+    echo "${KUBESEAL_CHECKSUM}  ./kubeseal.tgz" | sha256sum -c - && \
+    yum -y install tar gzip && \
+    tar -C /usr/local/bin -zxf ./kubeseal.tgz && \
+    yum -y erase tar gzip && \
+    yum -y clean all && rm -rf /var/cache