update direnv setup

Dockerfile

@@ -6,7 +6,7 @@ RUN apk -U --no-cache add \
     doas doas-sudo-shim \
     bash less openvi \
     coreutils grep gawk perl \
-    curl bind-tools
+    curl direnv bind-tools
 
 RUN adduser -h /home/cli -s /bin/bash -D cli cli && \
     addgroup cli wheel && \

README.md

@@ -23,9 +23,8 @@ exit
 
 ## More Info
 
-The image is based on *alpine:3*, with a small amount of additional
-setup/installation done. See the [Dockerfile](Dockerfile) and [ctx/home](ctx)
-for the specifics. 
+The image is based on *alpine:3* with a small amount of additional setup/installation.
+See the [Dockerfile](Dockerfile) and [ctx/home](ctx) for the specifics. 
 
   - Some basic utilities are installed for interative and script-based shell usage
   - A user is created with sudo (`-u root`) access. 
@@ -38,9 +37,9 @@ See ghcr.io/jswank/alpine-cli for current available images.
 
 ## Helper Script
 
-A helper script, using [casey/just](https://github.com/casey/just') is in
-[bin/cli](bin/cli). It can be used to quickly start an ephemeral (or
-persistent) container.
+[bin/cli](./bin/cli) is a helper script using
+[casey/just](https://github.com/casey/just'). It can be used to quickly start an
+ephemeral (or persistent) container.
 
 ```console
 $ bin/cli help

ctx/home/.config/direnv/direnvrc

@@ -0,0 +1,4 @@
+# Source library files in alphabetical order
+for lib in ~/.config/direnv/lib/*.sh; do
+  [[ -f "$lib" ]] && source "$lib"
+done

ctx/home/.config/direnv/lib/export-secret.sh

@@ -0,0 +1,16 @@
+# Exports a Podman / Docker secret as an environment variable
+export-secret() {
+    local name="$1"
+    local file="/run/secrets/${name}"
+
+    if [[ ! -f "$file" ]]; then
+        printf "secret file not found: %s\n" $file >&2
+        return 1
+    fi
+
+    # Read first line, remove trailing spaces/tabs, convert nulls to newlines
+    local value
+    value=$(head -n1 "$file" | sed 's/[ \t]*$//' | tr '\0' '\n')
+
+    export "${name}=${value}"
+}

ctx/home/.profile

@@ -6,3 +6,5 @@ export LESS=RX  # R for ANSI color sequences, X to not clear screen on exit
 export TMPDIR=/var/tmp
 export PS1="\w $ "
 export PATH=${PATH}:~/.local/bin
+
+eval "$(direnv hook bash)"