chore(docker): correct CL_BASE_DIR interpolation

The entire source that is specified for the volume at
`/opt/courtlistener` is interpolated:

```
${CL_BASE_DIR:-../../../courtlistener}:/opt/courtlistener
```

This appears to have brought about a misapprehension of what
should be interpolated: in 1a57939 a files full path was the
default value for `CL_BASE_DIR`:

```
- ${CL_BASE_DIR:-../../../courtlistener/cl/search/elasticsearch_files/synonyms_en.txt}:/usr/share/elasticsearch/config/synonyms_en.txt
- ${CL_BASE_DIR:-../../../courtlistener/cl/search/elasticsearch_files/stopwords_en.txt}:/usr/share/elasticsearch/config/stopwords_en.txt
- ${CL_BASE_DIR:-../../../courtlistener/cl/search/elasticsearch_files/protwords_en.txt}:/usr/share/elasticsearch/config/protwords_en.txt
```

There's no way that `CL_BASE_DIR`, if specified, could satisfy
these usages as well as `/opt/courtlistener`. The intent is clear
that it should stand-in for base directory and not any of its files.
This patch adopts that understanding.

docker/courtlistener/docker-compose.yml

@@ -57,7 +57,7 @@ services:
     container_name: cl-webpack
     image: node:16
     volumes:
-      - ${CL_BASE_DIR:-../../../courtlistener}:/opt/courtlistener
+      - ${CL_BASE_DIR:-../../}:/opt/courtlistener
     env_file:
       - ../../.env.dev
     working_dir: /opt/courtlistener/cl
@@ -79,7 +79,7 @@ services:
       - cl-disclosures
     volumes:
       - ${CL_POSTGRES_RUN_DIR:-/var/run/postgresql}:/var/run/postgresql
-      - ${CL_BASE_DIR:-../../../courtlistener}:/opt/courtlistener
+      - ${CL_BASE_DIR:-../../}:/opt/courtlistener
     networks:
       - cl_net_overlay
     env_file:
@@ -111,8 +111,8 @@ services:
     user: root
     volumes:
       - ${CL_POSTGRES_RUN_DIR:-/var/run/postgresql}:/var/run/postgresql
-      - ${CL_BASE_DIR:-../../../courtlistener}:/opt/courtlistener
-      - ${CL_BASE_DIR:-../../../courtlistener/.postgresql}:/root/.postgresql
+      - ${CL_BASE_DIR:-../../}:/opt/courtlistener
+      - ${CL_BASE_DIR:-../../}/.postgresql:/root/.postgresql
     networks:
       - cl_net_overlay
     env_file:
@@ -176,11 +176,11 @@ services:
         soft: 500
         hard: 600
     volumes:
-      - ${CL_BASE_DIR:-../../../courtlistener/docker/elastic/cl-es.crt}:/usr/share/elasticsearch/config/certs/cl-es.crt
-      - ${CL_BASE_DIR:-../../../courtlistener/docker/elastic/cl-es.key}:/usr/share/elasticsearch/config/certs/cl-es.key
-      - ${CL_BASE_DIR:-../../../courtlistener/docker/elastic/ca.crt}:/usr/share/elasticsearch/config/certs/ca.crt
-      - ${CL_BASE_DIR:-../../../courtlistener/cl/search/elasticsearch_files/synonyms_en.txt}:/usr/share/elasticsearch/config/dictionaries/synonyms_en.txt
-      - ${CL_BASE_DIR:-../../../courtlistener/cl/search/elasticsearch_files/stopwords_en.txt}:/usr/share/elasticsearch/config/dictionaries/stopwords_en.txt
+      - ${CL_BASE_DIR:-../../}/docker/elastic/cl-es.crt:/usr/share/elasticsearch/config/certs/cl-es.crt
+      - ${CL_BASE_DIR:-../../}/docker/elastic/cl-es.key:/usr/share/elasticsearch/config/certs/cl-es.key
+      - ${CL_BASE_DIR:-../../}/docker/elastic/ca.crt:/usr/share/elasticsearch/config/certs/ca.crt
+      - ${CL_BASE_DIR:-../../}/cl/search/elasticsearch_files/synonyms_en.txt:/usr/share/elasticsearch/config/dictionaries/synonyms_en.txt
+      - ${CL_BASE_DIR:-../../}/cl/search/elasticsearch_files/stopwords_en.txt:/usr/share/elasticsearch/config/dictionaries/stopwords_en.txt
     ports:
       - "9200:9200"
     networks: