From 0c908a53b6c37df6967560182ae3146d25ac7525 Mon Sep 17 00:00:00 2001
From: Jeffrey Paul <jp@eeqj.com>
Date: Wed, 18 Sep 2019 13:27:48 -0700
Subject: [PATCH 1/3] update readme

---
 README.markdown | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.markdown b/README.markdown
index 2884761..0faeccb 100644
--- a/README.markdown
+++ b/README.markdown
@@ -20,4 +20,4 @@ generated) to the logs on startup.
 # Versions
 
 * sneak/bitcoind:latest -> bitcoind master
-* sneak/bitcoind:0.12.0 -> bitcoind v0.12.0
+* sneak/bitcoind:v0.18.1 -> bitcoind v0.18.1

From eaa7b8b6ffbd33d5571233917e2ad2ae98749e75 Mon Sep 17 00:00:00 2001
From: Jeffrey Paul <jp@eeqj.com>
Date: Wed, 18 Sep 2019 13:49:56 -0700
Subject: [PATCH 2/3] replace shasum so random pw gets created

---
 Dockerfile      |  2 ++
 README.markdown | 19 +++++++++++++++++++
 2 files changed, 21 insertions(+)

diff --git a/Dockerfile b/Dockerfile
index 90960de..9930bd0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -21,12 +21,14 @@ RUN \
         libboost-system-dev \
         libboost-test-dev \
         libboost-thread-dev \
+        libdigest-sha-perl \
         libevent-dev \
         libminiupnpc-dev \
         libssl-dev \
         libtool \
         libzmq3-dev \
         libzmq5 \
+        perl \
         pkg-config \
     && \
     apt-get clean && \
diff --git a/README.markdown b/README.markdown
index 0faeccb..a882428 100644
--- a/README.markdown
+++ b/README.markdown
@@ -17,7 +17,26 @@ This outputs the config file, including the
 rpc user password (either from `BITCOIND_RPCPASSWORD` or randomly
 generated) to the logs on startup.
 
+# Security
+
+This container logs the rpc password into the container's logfiles.
+
 # Versions
 
 * sneak/bitcoind:latest -> bitcoind master
 * sneak/bitcoind:v0.18.1 -> bitcoind v0.18.1
+
+# Usage
+
+```
+docker run \
+        --name bitcoind \
+        -v /storage/bitcoin/bitcoind:/var/lib/bitcoind \
+        --env BITCOIND_RPCUSER=username \
+        --env BITCOIND_RPCPASSWORD=supersecret \
+        -p 8333:8333 \
+        -p 8332:8332 \
+        -d sneak/bitcoind:v0.18.1
+
+docker logs -f bitcoind
+```

From b9482d0aaf5f7332409f0b7f9f1071eabec77ae2 Mon Sep 17 00:00:00 2001
From: Jeffrey Paul <jp@eeqj.com>
Date: Wed, 18 Sep 2019 13:52:17 -0700
Subject: [PATCH 3/3] improved random pw generation, no external package

---
 Dockerfile   | 2 --
 bitcoind.run | 2 +-
 2 files changed, 1 insertion(+), 3 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index 9930bd0..90960de 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -21,14 +21,12 @@ RUN \
         libboost-system-dev \
         libboost-test-dev \
         libboost-thread-dev \
-        libdigest-sha-perl \
         libevent-dev \
         libminiupnpc-dev \
         libssl-dev \
         libtool \
         libzmq3-dev \
         libzmq5 \
-        perl \
         pkg-config \
     && \
     apt-get clean && \
diff --git a/bitcoind.run b/bitcoind.run
index 745a38d..640ba46 100644
--- a/bitcoind.run
+++ b/bitcoind.run
@@ -3,7 +3,7 @@
 export HOME="/var/lib/bitcoind"
 
 # gen random pw for rpc server
-RANDOMPW=$(dd if=/dev/urandom bs=10 count=1 status=none | shasum | cut -b 1-20)
+RANDOMPW=$(tr -dc 'a-f0-9' < /dev/urandom | head -c20)
 
 cat <<EOF > $HOME/bitcoin.conf
 rpcuser=${BITCOIND_RPCUSER:-rpcuser}