scripted-diff: replace ⛰ emoji with $ [skip ci]

-BEGIN VERIFY SCRIPT-
sed -i 's/⛰/$/g' $(git grep -l '⛰')
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docs/DOCKER.md

@@ -13,7 +13,7 @@ To build a standalone development image from the local source directory, use the
 following command:
 
 ```shell
-⛰  docker build --tag=myrepository/lnd-dev -f dev.Dockerfile .
+$  docker build --tag=myrepository/lnd-dev -f dev.Dockerfile .
 ```
 
 There is also a `docker-compose` setup available for development or testing that
@@ -29,7 +29,7 @@ Docker container, adding the appropriate command-line options as parameters.
 You first need to build the `lnd` docker image:
 
 ```shell
-⛰  docker build --tag=myrepository/lnd --build-arg checkout=v0.14.1-beta .
+$  docker build --tag=myrepository/lnd --build-arg checkout=v0.14.1-beta .
 ```
 
 It is recommended that you checkout the latest released tag.
@@ -37,7 +37,7 @@ It is recommended that you checkout the latest released tag.
 You can continue by creating and running the container:
 
 ```shell
-⛰  docker run myrepository/lnd [command-line options]
+$  docker run myrepository/lnd [command-line options]
 ```
 
 ## Production (official images)
@@ -49,8 +49,8 @@ images of `lnd` available in the
 You can just pull those images by specifying a release tag:
 
 ```shell
-⛰  docker pull lightninglabs/lnd:v0.14.1-beta
-⛰  docker run lightninglabs/lnd [command-line options]
+$  docker pull lightninglabs/lnd:v0.14.1-beta
+$  docker run lightninglabs/lnd [command-line options]
 ```
 
 Note that **`daily-*` tags are unstable and not for production use**.
@@ -64,10 +64,10 @@ script in the image that can be called (before starting the container for
 example):
 
 ```shell
-⛰  docker run --rm --entrypoint="" lightninglabs/lnd:v0.14.1-beta /verify-install.sh v0.14.1-beta
-⛰  OK=$?
-⛰  if [ "$OK" -ne "0" ]; then echo "Verification failed!"; exit 1; done
-⛰  docker run lightninglabs/lnd:v0.14.1-beta [command-line options]
+$  docker run --rm --entrypoint="" lightninglabs/lnd:v0.14.1-beta /verify-install.sh v0.14.1-beta
+$  OK=$?
+$  if [ "$OK" -ne "0" ]; then echo "Verification failed!"; exit 1; done
+$  docker run lightninglabs/lnd:v0.14.1-beta [command-line options]
 ```
 
 ## Volumes
@@ -78,7 +78,7 @@ persist through container restarts.
 You can also optionally manually specify a local folder to be used as a volume:
 
 ```shell
-⛰  docker create --name=mylndcontainer -v /media/lnd-docker/:/root/.lnd myrepository/lnd [command-line options]
+$  docker create --name=mylndcontainer -v /media/lnd-docker/:/root/.lnd myrepository/lnd [command-line options]
 ```
 
 ## Example
@@ -86,19 +86,19 @@ You can also optionally manually specify a local folder to be used as a volume:
 Here is an example testnet `lnd` that uses Neutrino:
 
 ```shell
-⛰  docker run --name lnd-testnet myrepository/lnd --bitcoin.active --bitcoin.testnet --bitcoin.node=neutrino --neutrino.connect=faucet.lightning.community
+$  docker run --name lnd-testnet myrepository/lnd --bitcoin.active --bitcoin.testnet --bitcoin.node=neutrino --neutrino.connect=faucet.lightning.community
 ```
 
 Create a wallet (and write down the seed):
 
 ```shell
-⛰  docker exec -it lnd-testnet lncli create
+$  docker exec -it lnd-testnet lncli create
 ```
 
 Confirm `lnd` has begun to synchronize:
 
 ```shell
-⛰  docker logs lnd-testnet
+$  docker logs lnd-testnet
 [snipped]
 2018-05-01 02:28:01.201 [INF] RPCS: RPC server listening on 127.0.0.1:10009
 2018-05-01 02:28:01.201 [INF] LTND: Waiting for chain backend to finish sync, start_height=2546
@@ -115,29 +115,29 @@ to expose RPC ports, use `btcd` or `bitcoind`, or add additional chains.
 To test the Docker production image locally, run the following from the project root:
 
 ```shell
-⛰  docker build . -t myrepository/lnd:master
+$  docker build . -t myrepository/lnd:master
 ```
 
 To choose a specific [branch](https://github.com/lightningnetwork/lnd/branches) or [tag](https://hub.docker.com/r/lightninglabs/lnd/tags?page=1&ordering=last_updated) instead, use the `checkout` build-arg. For example, to build the latest tagged commit:
 
 ```shell
-⛰  docker build . --build-arg checkout=v0.14.1-beta -t myrepository/lnd:v0.14.1-beta
+$  docker build . --build-arg checkout=v0.14.1-beta -t myrepository/lnd:v0.14.1-beta
 ```
 
 To build the image using the most current tag:
 
 ```shell
-⛰  docker build . --build-arg checkout=$(git describe --tags `git rev-list --tags --max-count=1`) -t myrepository/lnd:latest-tag
+$  docker build . --build-arg checkout=$(git describe --tags `git rev-list --tags --max-count=1`) -t myrepository/lnd:latest-tag
 ```
 
 You can also specify a different repo than the default (`https://github.com/lightningnetwork/lnd`) using the `git_url` build-arg:
 
 ```shell
-⛰  docker build . --build-arg git_url=https://git.example.com/lnd.git --build-arg checkout=mybranch -t myrepository/lnd:v0.13.0-beta
+$  docker build . --build-arg git_url=https://git.example.com/lnd.git --build-arg checkout=mybranch -t myrepository/lnd:v0.13.0-beta
 ```
 
 Once the image has been built and tagged locally, start the container:
 
 ```shell
-⛰  docker run --name=lnd-testnet -it myrepository/lnd:latest-tag --bitcoin.active --bitcoin.testnet --bitcoin.node=neutrino --neutrino.connect=faucet.lightning.community
+$  docker run --name=lnd-testnet -it myrepository/lnd:latest-tag --bitcoin.active --bitcoin.testnet --bitcoin.node=neutrino --neutrino.connect=faucet.lightning.community
 ```