diff --git a/Dockerfile.centos7 b/Dockerfile.centos7
index d32467a0..ad1e620b 100644
--- a/Dockerfile.centos7
+++ b/Dockerfile.centos7
@@ -19,13 +19,12 @@ RUN wget https://raw.githubusercontent.com/davidkebo/cudd/main/cudd_versions/cud
     tar -xvf cudd-3.0.0.tar.gz && \
     rm cudd-3.0.0.tar.gz
 
-# Install CUDD
+# Build CUDD
 RUN source /opt/rh/devtoolset-8/enable && \
     cd cudd-3.0.0 && \
     mkdir ../cudd && \
     ./configure && \
-    make -j`nproc` && \
-    make install
+    make -j`nproc`
 
 FROM base-dependencies AS builder
 
@@ -34,7 +33,10 @@ WORKDIR /OpenSTA
 
 # Build
 RUN rm -rf build && mkdir build
-RUN source /opt/rh/devtoolset-8/enable && cd build && cmake3 .. && make -j`nproc`
+RUN source /opt/rh/devtoolset-8/enable && \
+    cd build && \
+    cmake3 -DCUDD_DIR=../cudd-3.0.0 .. && \
+    make -j`nproc`
 
 # Run sta on entry
 ENTRYPOINT ["OpenSTA/app/sta"]
diff --git a/Dockerfile.ubuntu_18.04 b/Dockerfile.ubuntu_22.04
similarity index 69%
rename from Dockerfile.ubuntu_18.04
rename to Dockerfile.ubuntu_22.04
index 7d0c5647..bee8b31e 100644
--- a/Dockerfile.ubuntu_18.04
+++ b/Dockerfile.ubuntu_22.04
@@ -1,23 +1,33 @@
-FROM ubuntu:18.04
+FROM ubuntu:22.04
 LABEL author="James Cherry"
 LABEL maintainer="James Cherry <cherry@parallaxsw.com>"
 
 # Install basics
 ARG DEBIAN_FRONTEND=noninteractive
 RUN apt-get update && \
-    apt-get install -y wget cmake gcc tcl-dev tcl-tclreadline libeigen3-dev swig bison flex
+    apt-get install -y \
+    wget \
+    cmake \
+    gcc \
+    tcl-dev \
+    tcl-tclreadline \
+    libeigen3-dev \
+    swig \
+    bison \
+    flex \
+    automake \
+    autotools-dev
 
 # Download CUDD
 RUN wget https://raw.githubusercontent.com/davidkebo/cudd/main/cudd_versions/cudd-3.0.0.tar.gz && \
     tar -xvf cudd-3.0.0.tar.gz && \
     rm cudd-3.0.0.tar.gz
 
-# Install CUDD
+# Build CUDD
 RUN cd cudd-3.0.0 && \
     mkdir ../cudd && \
     ./configure && \
-    make -j`nproc` && \
-    make install
+    make -j`nproc`
 
 # Copy files and install OpenSTA
 RUN mkdir OpenSTA
@@ -26,7 +36,7 @@ RUN cd OpenSTA && \
     rm -rf build && \
     mkdir build && \
     cd build && \
-    cmake .. && \
+    cmake -DCUDD_DIR=../cudd-3.0.0 .. && \
     make -j`nproc`
 
 # Run sta on entry
diff --git a/README.md b/README.md
index 2555a5f8..1af697b9 100644
--- a/README.md
+++ b/README.md
@@ -9,6 +9,8 @@ standard file formats.
 * SDC timing constraints
 * SDF delay annotation
 * SPEF parasitics
+* VCD power acitivies
+* SAIF power acitivies
 
 OpenSTA uses a TCL command interpreter to read the design, specify
 timing constraints and print timing reports.
@@ -49,8 +51,8 @@ netlist data structures without duplicating them.
 * Simulator to propagate constants from constraints and netlist tie high/low
 
 See doc/OpenSTA.pdf for command documentation.
-See doc/StaApi.txt for timing engine API documentation.
 See doc/ChangeLog.txt for changes to commands.
+See doc/StaApi.txt for timing engine API documentation.
 
 OpenSTA is dual licensed. It is released under GPL v3 as OpenSTA and
 is also licensed for commerical applications by Parallax Software without