add cert; replace postgres image with postgre-ssl in ci

Author: Hexilee

.github/workflows/code-coverage.yml

@@ -21,13 +21,15 @@ jobs:
     runs-on: ubuntu-latest
     services:
       postgres:
-        image: postgres:10.8
+        image: nimbustech/postgres-ssl:9.5
         env:
           POSTGRES_USER: postgres
           POSTGRES_PASSWORD: postgres
           POSTGRES_DB: postgres
         ports:
           - 5432:5432
+        volumes:
+          - tests/cert:/var/ssl
         # needed because the postgres container does not provide a healthcheck
         options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
     steps:

.github/workflows/stable-test.yml

@@ -29,13 +29,15 @@ jobs:
           - 1.40.0
     services:
       postgres:
-        image: postgres:10.8
+        image: nimbustech/postgres-ssl:9.5
         env:
           POSTGRES_USER: postgres
           POSTGRES_PASSWORD: postgres
           POSTGRES_DB: postgres
         ports:
           - 5432:5432
+        volumes:
+          - tests/cert:/var/ssl
         # needed because the postgres container does not provide a healthcheck
         options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
     steps:

tests/cert/server.crt

@@ -0,0 +1,24 @@
+-----BEGIN CERTIFICATE-----
+MIID9DCCAtygAwIBAgIJAIYfg4EQ2pVAMA0GCSqGSIb3DQEBBQUAMFkxCzAJBgNV
+BAYTAkFVMRMwEQYDVQQIEwpTb21lLVN0YXRlMSEwHwYDVQQKExhJbnRlcm5ldCBX
+aWRnaXRzIFB0eSBMdGQxEjAQBgNVBAMTCWxvY2FsaG9zdDAeFw0xNjA2MjgyMjQw
+NDFaFw0yNjA2MjYyMjQwNDFaMFkxCzAJBgNVBAYTAkFVMRMwEQYDVQQIEwpTb21l
+LVN0YXRlMSEwHwYDVQQKExhJbnRlcm5ldCBXaWRnaXRzIFB0eSBMdGQxEjAQBgNV
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+83HIdRQic40bJQf9ucSwY5ArkttPhC8ewQGyiGexm1Tvx9YA/qT2rscKPHXCPYcP
+IUE+nJTc8lQb8wPnFwGdHUsJfCvurxE4Yv4Oi74+q1enhHBGsvhFdFY5jTYD9unM
+zBEn+ZHX3PlKhe3wMub4khBTbPLK+n/laQWuZNsa+kj7BynkAg8W/6RK0Z0cJzzw
+aiVP0bSvatAAcSwkEfKEv5xExjWqoewjSlQLEZYIjJhXdtx/8AMnrcyxrFvKALUQ
+9M15FXvlPOB7ez14xIXQBKvvLwXvteHF6kYbzg/Bl1Q2GE9usclPa4UvTpnLv6gq
+NmFaAhoxnXA=
+-----END CERTIFICATE-----