init commit

.env.dist

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+VIRTUAL_HOST=
+PMA_ABSOLUTE_URI=
+PMA_PORT=
+
+LET_EMAIL=

.gitignore

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+.env

docker-compose.yml

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+version: '3.1'
+
+services:
+  phpmyadmin:
+    container_name: phpmyadmin
+    image: phpmyadmin
+    restart: always
+    ports:
+      - ${PMA_PORT}:80
+    environment:
+      - PMA_ARBITRARY=1
+    networks:
+      - web
+
+networks:
+    web:
+      external: true