localのdocker環境で、postgresが立ち上がらない問題の修正

docker-compose.yml

@@ -1,5 +1,3 @@
-version: "3.8"
-
 x-custom:
   app:
     - &rails_env "development"
@@ -45,7 +43,9 @@ services:
     links:
       - pg
   pg:
-    image: postgres:12
+    image: postgres
+    build:
+      context: docker/postgres/.
     volumes:
       - pg-data:/var/lib/postgresql/data
     environment:

docker/postgres/Dockerfile

@@ -0,0 +1,15 @@
+FROM postgres:12
+
+RUN apt update
+RUN apt install -y postgresql-server-dev-12 make gcc curl libicu-dev
+
+RUN cd /tmp && \
+    curl -L -O https://github.com/pgbigm/pg_bigm/archive/refs/tags/v1.2-20240606.tar.gz && \
+    tar zxf v1.2-20240606.tar.gz && \
+    cd pg_bigm-1.2-20240606 && \
+    make USE_PGXS=1 && \
+    make USE_PGXS=1 install && \
+    rm -rf /tmp/pg_bigm-1.2-20240606 /tmp/v1.2-20240606.tar.gz
+
+RUN mkdir -p /docker-entrypoint-initdb.d
+COPY ./initdb-pg_bigm.sql /docker-entrypoint-initdb.d/10_pg_bigm.sql

docker/postgres/initdb-pg_bigm.sql

@@ -0,0 +1 @@
+CREATE EXTENSION IF NOT EXISTS pg_bigm;