set hostname for all services in Compose file

Needed by rabbitmq to persist queues correctly (because hostname is used in cluster name)
but nice to have elsewhere just so you can tell where you are when logged in to a container.

docker-compose.yml

@@ -2,6 +2,7 @@ services:
 
   # webserver to handle all traffic. This can use let's encrypt to generate a SSL cert.
   traefik:
+    hostname: traefik
     image: "traefik:v2.9"
     command:
       - --log.level=INFO
@@ -38,6 +39,7 @@ services:
 
   # rabbitmq to connect to extractors
   rabbitmq:
+    hostname: rabbitmq
     image: rabbitmq:3.8-management
     restart: unless-stopped
     networks:
@@ -64,6 +66,7 @@ services:
 
   # postgresql + postgis to hold all the data
   postgres:
+    hostname: postgres
     image: mdillon/postgis:9.5
     restart: unless-stopped
     networks:
@@ -80,6 +83,7 @@ services:
   # BETY rails frontend to the database
   # ----------------------------------------------------------------------
   bety:
+    hostname: bety
     image: pecan/bety:${BETY_VERSION:-latest}
     restart: unless-stopped
     networks:
@@ -108,6 +112,7 @@ services:
   # RStudio
   # ----------------------------------------------------------------------
   rstudio:
+    hostname: rstudio
     image: pecan/base:${PECAN_VERSION:-latest}
     command: /work/rstudio.sh
     restart: unless-stopped
@@ -151,6 +156,7 @@ services:
 
   # PEcAn documentation as well as PEcAn home page
   docs:
+    hostname: docs
     image: pecan/docs:${PECAN_VERSION:-latest}
     restart: unless-stopped
     networks:
@@ -167,6 +173,7 @@ services:
 
   # PEcAn web front end, this is just the PHP code
   pecan:
+    hostname: pecan-web
     user: "${UID:-1001}:${GID:-1001}"
     image: pecan/web:${PECAN_VERSION:-latest}
     restart: unless-stopped
@@ -197,6 +204,7 @@ services:
 
   # PEcAn model monitor
   monitor:
+    hostname: monitor
     user: "${UID:-1001}:${GID:-1001}"
     image: pecan/monitor:${PECAN_VERSION:-latest}
     restart: unless-stopped
@@ -225,6 +233,7 @@ services:
 
   # PEcAn executor, executes jobs. Does not the actual models
   executor:
+    hostname: executor
     user: "${UID:-1001}:${GID:-1001}"
     image: pecan/executor:${PECAN_VERSION:-latest}
     restart: unless-stopped
@@ -248,6 +257,7 @@ services:
   # ----------------------------------------------------------------------
   # PEcAn FATES model runner
   fates:
+    hostname: fates
     user: "${UID:-1001}:${GID:-1001}"
     image: ghcr.io/noresmhub/ctsm-api:latest
     restart: unless-stopped
@@ -263,6 +273,7 @@ services:
 
   # PEcAn basgra model runner
   basgra:
+    hostname: basgra
     user: "${UID:-1001}:${GID:-1001}"
     image: pecan/model-basgra-basgra_n_v1.0:${PECAN_VERSION:-latest}
     restart: unless-stopped
@@ -278,6 +289,7 @@ services:
 
   # PEcAn sipnet model runner
   sipnet:
+    hostname: sipnet-git
     user: "${UID:-1001}:${GID:-1001}"
     image: pecan/model-sipnet-git:${PECAN_VERSION:-latest}
     restart: unless-stopped
@@ -293,6 +305,7 @@ services:
 
   # PEcAn ED model runner
   ed2:
+    hostname: ed2-2.2.0
     user: "${UID:-1001}:${GID:-1001}"
     image: pecan/model-ed2-2.2.0:${PECAN_VERSION:-latest}
     restart: unless-stopped
@@ -308,6 +321,7 @@ services:
 
   # PEcAn MAESPA model runner
   maespa:
+    hostname: maespa-git
     user: "${UID:-1001}:${GID:-1001}"
     image: pecan/model-maespa-git:${PECAN_VERSION:-latest}
     restart: unless-stopped
@@ -323,6 +337,7 @@ services:
 
   # PEcAn BioCro model runner
   biocro:
+    hostname: biocro-0.95
     user: "${UID:-1001}:${GID:-1001}"
     image: pecan/model-biocro-0.95:${PECAN_VERSION:-latest}
     restart: unless-stopped
@@ -341,6 +356,7 @@ services:
   # ----------------------------------------------------------------------
   # PEcAn DB Sync visualization
   dbsync:
+    hostname: dbsync
     image: pecan/shiny-dbsync:${PECAN_VERSION:-latest}
     restart: unless-stopped
     networks:
@@ -363,6 +379,7 @@ services:
   # PEcAn API
   # ----------------------------------------------------------------------
   api:
+    hostname: api
     user: "${UID:-1001}:${GID:-1001}"
     image: pecan/api:${PECAN_VERSION:-latest}
     restart: unless-stopped