Switch from envrc → env format

Ref coop-cloud/abra#40

.env.sample

@@ -0,0 +1,21 @@
+APP=codimd
+
+DOMAIN=codimd.example.com
+## Domain aliases
+#EXTRA_DOMAINS=', `www.codimd.example.com`'
+LETS_ENCRYPT_ENV=production
+
+DB_ROOT_PASSWORD_VERSION=v1
+ENTRYPOINT_CONF_VERSION=v1
+
+# OAuth, see https://hackmd.io/@codimd/codimd-generic-oauth-2
+
+#COMPOSE_FILE="compose.yml:compose.oauth.yml"
+#CMD_OAUTH2_PROVIDERNAME="Keycloak"
+#CMD_OAUTH2_BASEURL="https://keycloak.example.com/realms/realmname/protocol/openid-connect/"
+#CMD_OAUTH2_CLIENT_ID="codimd"
+#CMD_OAUTH2_AUTHORIZATION_URL="https://keycloak.example.com/auth/realms/realmname/protocol/openid-connect/auth"
+#CMD_OAUTH2_TOKEN_URL="https://keycloak.example.com/auth/realms/realmname/protocol/openid-connect/token"
+#CMD_OAUTH2_USER_PROFILE_URL="https://keycloak.example.com/auth/realms/realmname/protocol/openid-connect/userinfo"
+#
+#OAUTH_KEY_VERSION=v1

.envrc.sample

@@ -1,21 +0,0 @@
-export APP=codimd
-
-export DOMAIN=codimd.example.com
-## Domain aliases
-#export EXTRA_DOMAINS=', `www.codimd.example.com`'
-export LETS_ENCRYPT_ENV=production
-
-export DB_ROOT_PASSWORD_VERSION=v1
-export ENTRYPOINT_CONF_VERSION=v1
-
-# OAuth, see https://hackmd.io/@codimd/codimd-generic-oauth-2
-
-#export COMPOSE_FILE="compose.yml:compose.oauth.yml"
-#export CMD_OAUTH2_PROVIDERNAME="Keycloak"
-#export CMD_OAUTH2_BASEURL="https://keycloak.example.com/realms/realmname/protocol/openid-connect/"
-#export CMD_OAUTH2_CLIENT_ID="codimd"
-#export CMD_OAUTH2_AUTHORIZATION_URL="https://keycloak.example.com/auth/realms/realmname/protocol/openid-connect/auth"
-#export CMD_OAUTH2_TOKEN_URL="https://keycloak.example.com/auth/realms/realmname/protocol/openid-connect/token"
-#export CMD_OAUTH2_USER_PROFILE_URL="https://keycloak.example.com/auth/realms/realmname/protocol/openid-connect/userinfo"
-#
-#export OAUTH_KEY_VERSION=v1