Trailing slashes on volumes fail on newer versions of docker-compose (#949)

* Trailing slashes on volumes fail on newer versions of docker-compose

See [Issue 947](https://github.com/pi-hole/docker-pi-hole/issues/947)
for the background.

This PR proposes removing trailing slashes from all documentation,
examples and scripts.

Signed-off-by: Phill Kelley <pmk.57t49@lgosys.com>

README.md

@@ -28,8 +28,8 @@ services:
       # WEBPASSWORD: 'set a secure password here or it will be random'
     # Volumes store your data between container upgrades
     volumes:
-      - './etc-pihole/:/etc/pihole/'
+      - './etc-pihole:/etc/pihole'
-      - './etc-dnsmasq.d/:/etc/dnsmasq.d/'
+      - './etc-dnsmasq.d:/etc/dnsmasq.d'
     # Recommended but not required (DHCP needs NET_ADMIN)
     #   https://github.com/pi-hole/docker-pi-hole#note-on-capabilities
     cap_add:
@@ -71,8 +71,8 @@ This container uses 2 popular ports, port 53 and port 80, so **may conflict with
 If you're using a Red Hat based distribution with an SELinux Enforcing policy add `:z` to line with volumes like so:
 
 ```
-    -v "$(pwd)/etc-pihole/:/etc/pihole/:z" \
+    -v "$(pwd)/etc-pihole:/etc/pihole:z" \
-    -v "$(pwd)/etc-dnsmasq.d/:/etc/dnsmasq.d/:z" \
+    -v "$(pwd)/etc-dnsmasq.d:/etc/dnsmasq.d:z" \
 ```
 
 Volumes are recommended for persisting data across container re-creations for updating images.  The IP lookup variables may not work for everyone, please review their values and hard code IP and IPv6 if necessary.

docker-compose-nginx-proxy.yml

@@ -21,8 +21,8 @@ services:
       - "67:67/udp"
       - '8053:80/tcp'
     volumes:
-      - './etc-pihole/:/etc/pihole/'
+      - './etc-pihole:/etc/pihole'
-      - './etc-dnsmasq.d/:/etc/dnsmasq.d/'
+      - './etc-dnsmasq.d:/etc/dnsmasq.d'
       # run `touch ./var-log/pihole.log` first unless you like errors
       # - './var-log/pihole.log:/var/log/pihole.log'
     # Recommended but not required (DHCP needs NET_ADMIN)
@@ -51,7 +51,7 @@ services:
 #    ports:
 #      - '2368:2368/tcp'
 #    volumes:
-#      - '/etc/ghost/:/ghost-override'
+#      - '/etc/ghost:/ghost-override'
 #    environment:
 #      PROXY_LOCATION: ghost
 #      VIRTUAL_HOST: ghost.yourDomain.lan

docker-compose.yml.example

@@ -17,8 +17,8 @@ services:
       # WEBPASSWORD: 'set a secure password here or it will be random'
     # Volumes store your data between container upgrades
     volumes:
-      - './etc-pihole/:/etc/pihole/'
+      - './etc-pihole:/etc/pihole'
-      - './etc-dnsmasq.d/:/etc/dnsmasq.d/'
+      - './etc-dnsmasq.d:/etc/dnsmasq.d'
       # run `touch ./var-log/pihole.log` first unless you like errors
       # - './var-log/pihole.log:/var/log/pihole.log'
     # Recommended but not required (DHCP needs NET_ADMIN)

docker_run.sh

@@ -11,8 +11,8 @@ docker run -d \
     -p 53:53/tcp -p 53:53/udp \
     -p 80:80 \
     -e TZ="America/Chicago" \
-    -v "${PIHOLE_BASE}/etc-pihole/:/etc/pihole/" \
+    -v "${PIHOLE_BASE}/etc-pihole:/etc/pihole" \
-    -v "${PIHOLE_BASE}/etc-dnsmasq.d/:/etc/dnsmasq.d/" \
+    -v "${PIHOLE_BASE}/etc-dnsmasq.d:/etc/dnsmasq.d" \
     --dns=127.0.0.1 --dns=1.1.1.1 \
     --restart=unless-stopped \
     --hostname pi.hole \

test/test_volume_data.sh

@@ -46,8 +46,8 @@ echo "Testing $IMAGE with volumes base path $VOLUMES"
 # Running stock+empty volumes (no ports to avoid conflicts)
 CONTAINER="$(
     docker run -d \
-    -v "$VOL_PH:/etc/pihole/" \
+    -v "$VOL_PH:/etc/pihole" \
-    -v "$VOL_DM:/etc/dnsmasq.d/" \
+    -v "$VOL_DM:/etc/dnsmasq.d" \
     -v "/dev/null:/etc/pihole/adlists.list" \
     --entrypoint='' \
     $IMAGE \
@@ -92,8 +92,8 @@ assert_new_settings
 docker rm -f $CONTAINER
 CONTAINER="$(
     docker run -d \
-    -v "$VOL_PH:/etc/pihole/" \
+    -v "$VOL_PH:/etc/pihole" \
-    -v "$VOL_DM:/etc/dnsmasq.d/" \
+    -v "$VOL_DM:/etc/dnsmasq.d" \
     -v "/dev/null:/etc/pihole/adlists.list" \
     --entrypoint='' \
     $IMAGE \